diff --git a/aws/data_source_aws_ec2_coip_pool_test.go b/aws/data_source_aws_ec2_coip_pool_test.go
index 607882a7b7f..024d2da5579 100644
--- a/aws/data_source_aws_ec2_coip_pool_test.go
+++ b/aws/data_source_aws_ec2_coip_pool_test.go
@@ -1,7 +1,6 @@
 package aws
 
 import (
-	"os"
 	"regexp"
 	"testing"
 
@@ -9,19 +8,10 @@ import (
 )
 
 func TestAccDataSourceAwsEc2CoipPool_Filter(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_coip_pool.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -37,19 +27,10 @@ func TestAccDataSourceAwsEc2CoipPool_Filter(t *testing.T) {
 }
 
 func TestAccDataSourceAwsEc2CoipPool_Id(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_coip_pool.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
diff --git a/aws/data_source_aws_ec2_coip_pools_test.go b/aws/data_source_aws_ec2_coip_pools_test.go
index 7263de157d5..d1e839a8f46 100644
--- a/aws/data_source_aws_ec2_coip_pools_test.go
+++ b/aws/data_source_aws_ec2_coip_pools_test.go
@@ -1,26 +1,16 @@
 package aws
 
 import (
-	"os"
 	"testing"
 
 	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 )
 
 func TestAccDataSourceAwsEc2CoipPools_basic(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_coip_pools.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -34,19 +24,10 @@ func TestAccDataSourceAwsEc2CoipPools_basic(t *testing.T) {
 }
 
 func TestAccDataSourceAwsEc2CoipPools_Filter(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_coip_pools.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
diff --git a/aws/data_source_aws_ec2_local_gateway_route_table_test.go b/aws/data_source_aws_ec2_local_gateway_route_table_test.go
index a413f1cf582..6df7b4aaed6 100644
--- a/aws/data_source_aws_ec2_local_gateway_route_table_test.go
+++ b/aws/data_source_aws_ec2_local_gateway_route_table_test.go
@@ -1,8 +1,6 @@
 package aws
 
 import (
-	"fmt"
-	"os"
 	"regexp"
 	"testing"
 
@@ -10,19 +8,10 @@ import (
 )
 
 func TestAccDataSourceAwsEc2LocalGatewayRouteTable_basic(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_route_table.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -30,7 +19,7 @@ func TestAccDataSourceAwsEc2LocalGatewayRouteTable_basic(t *testing.T) {
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestMatchResourceAttr(dataSourceName, "local_gateway_id", regexp.MustCompile(`^lgw-`)),
 					resource.TestMatchResourceAttr(dataSourceName, "local_gateway_route_table_id", regexp.MustCompile(`^lgw-rtb-`)),
-					resource.TestCheckResourceAttr(dataSourceName, "outpost_arn", outpostArn),
+					testAccMatchResourceAttrRegionalARN(dataSourceName, "outpost_arn", "outposts", regexp.MustCompile(`outpost/op-.+`)),
 					resource.TestCheckResourceAttr(dataSourceName, "state", "available"),
 				),
 			},
@@ -39,27 +28,18 @@ func TestAccDataSourceAwsEc2LocalGatewayRouteTable_basic(t *testing.T) {
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayRouteTable_Filter(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_route_table.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccDataSourceAwsEc2LocalGatewayRouteTableConfigFilter(outpostArn),
+				Config: testAccDataSourceAwsEc2LocalGatewayRouteTableConfigFilter(),
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestMatchResourceAttr(dataSourceName, "local_gateway_id", regexp.MustCompile(`^lgw-`)),
 					resource.TestMatchResourceAttr(dataSourceName, "local_gateway_route_table_id", regexp.MustCompile(`^lgw-rtb-`)),
-					resource.TestCheckResourceAttr(dataSourceName, "outpost_arn", outpostArn),
+					testAccMatchResourceAttrRegionalARN(dataSourceName, "outpost_arn", "outposts", regexp.MustCompile(`outpost/op-.+`)),
 					resource.TestCheckResourceAttr(dataSourceName, "state", "available"),
 				),
 			},
@@ -68,19 +48,10 @@ func TestAccDataSourceAwsEc2LocalGatewayRouteTable_Filter(t *testing.T) {
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayRouteTable_LocalGatewayId(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_route_table.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -88,7 +59,7 @@ func TestAccDataSourceAwsEc2LocalGatewayRouteTable_LocalGatewayId(t *testing.T)
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestMatchResourceAttr(dataSourceName, "local_gateway_id", regexp.MustCompile(`^lgw-`)),
 					resource.TestMatchResourceAttr(dataSourceName, "local_gateway_route_table_id", regexp.MustCompile(`^lgw-rtb-`)),
-					resource.TestCheckResourceAttr(dataSourceName, "outpost_arn", outpostArn),
+					testAccMatchResourceAttrRegionalARN(dataSourceName, "outpost_arn", "outposts", regexp.MustCompile(`outpost/op-.+`)),
 					resource.TestCheckResourceAttr(dataSourceName, "state", "available"),
 				),
 			},
@@ -97,27 +68,18 @@ func TestAccDataSourceAwsEc2LocalGatewayRouteTable_LocalGatewayId(t *testing.T)
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayRouteTable_OutpostArn(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_route_table.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccDataSourceAwsEc2LocalGatewayRouteTableConfigOutpostArn(outpostArn),
+				Config: testAccDataSourceAwsEc2LocalGatewayRouteTableConfigOutpostArn(),
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestMatchResourceAttr(dataSourceName, "local_gateway_id", regexp.MustCompile(`^lgw-`)),
 					resource.TestMatchResourceAttr(dataSourceName, "local_gateway_route_table_id", regexp.MustCompile(`^lgw-rtb-`)),
-					resource.TestCheckResourceAttr(dataSourceName, "outpost_arn", outpostArn),
+					testAccMatchResourceAttrRegionalARN(dataSourceName, "outpost_arn", "outposts", regexp.MustCompile(`outpost/op-.+`)),
 					resource.TestCheckResourceAttr(dataSourceName, "state", "available"),
 				),
 			},
@@ -125,15 +87,17 @@ func TestAccDataSourceAwsEc2LocalGatewayRouteTable_OutpostArn(t *testing.T) {
 	})
 }
 
-func testAccDataSourceAwsEc2LocalGatewayRouteTableConfigFilter(outpostArn string) string {
-	return fmt.Sprintf(`
+func testAccDataSourceAwsEc2LocalGatewayRouteTableConfigFilter() string {
+	return `
+data "aws_outposts_outposts" "test" {}
+
 data "aws_ec2_local_gateway_route_table" "test" {
   filter {
     name   = "outpost-arn"
-    values = [%[1]q]
+    values = [tolist(data.aws_outposts_outposts.test.arns)[0]]
   }
 }
-`, outpostArn)
+`
 }
 
 func testAccDataSourceAwsEc2LocalGatewayRouteTableConfigLocalGatewayId() string {
@@ -156,10 +120,12 @@ data "aws_ec2_local_gateway_route_table" "test" {
 `
 }
 
-func testAccDataSourceAwsEc2LocalGatewayRouteTableConfigOutpostArn(outpostArn string) string {
-	return fmt.Sprintf(`
+func testAccDataSourceAwsEc2LocalGatewayRouteTableConfigOutpostArn() string {
+	return `
+data "aws_outposts_outposts" "test" {}
+
 data "aws_ec2_local_gateway_route_table" "test" {
-  outpost_arn = %[1]q
+  outpost_arn = tolist(data.aws_outposts_outposts.test.arns)[0]
 }
-`, outpostArn)
+`
 }
diff --git a/aws/data_source_aws_ec2_local_gateway_route_tables_test.go b/aws/data_source_aws_ec2_local_gateway_route_tables_test.go
index 8fabaf99170..61a5c48b914 100644
--- a/aws/data_source_aws_ec2_local_gateway_route_tables_test.go
+++ b/aws/data_source_aws_ec2_local_gateway_route_tables_test.go
@@ -1,26 +1,16 @@
 package aws
 
 import (
-	"os"
 	"testing"
 
 	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 )
 
 func TestAccDataSourceAwsEc2LocalGatewayRouteTables_basic(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_route_tables.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -34,19 +24,10 @@ func TestAccDataSourceAwsEc2LocalGatewayRouteTables_basic(t *testing.T) {
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayRouteTables_Filter(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_route_tables.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
diff --git a/aws/data_source_aws_ec2_local_gateway_test.go b/aws/data_source_aws_ec2_local_gateway_test.go
index 972a8f0c9bd..782a8c36550 100644
--- a/aws/data_source_aws_ec2_local_gateway_test.go
+++ b/aws/data_source_aws_ec2_local_gateway_test.go
@@ -1,7 +1,6 @@
 package aws
 
 import (
-	"os"
 	"regexp"
 	"testing"
 
@@ -9,26 +8,17 @@ import (
 )
 
 func TestAccDataSourceAwsEc2LocalGateway_basic(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
 				Config: testAccDataSourceAwsEc2LocalGatewayConfigId(),
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestMatchResourceAttr(dataSourceName, "id", regexp.MustCompile(`^lgw-`)),
-					resource.TestCheckResourceAttr(dataSourceName, "outpost_arn", outpostArn),
+					testAccMatchResourceAttrRegionalARN(dataSourceName, "outpost_arn", "outposts", regexp.MustCompile(`outpost/op-.+`)),
 					testAccCheckResourceAttrAccountID(dataSourceName, "owner_id"),
 					resource.TestCheckResourceAttr(dataSourceName, "state", "available"),
 				),
diff --git a/aws/data_source_aws_ec2_local_gateway_virtual_interface_group_test.go b/aws/data_source_aws_ec2_local_gateway_virtual_interface_group_test.go
index ea3f5b62220..ac8540de20b 100644
--- a/aws/data_source_aws_ec2_local_gateway_virtual_interface_group_test.go
+++ b/aws/data_source_aws_ec2_local_gateway_virtual_interface_group_test.go
@@ -2,7 +2,6 @@ package aws
 
 import (
 	"fmt"
-	"os"
 	"regexp"
 	"testing"
 
@@ -11,19 +10,10 @@ import (
 )
 
 func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroup_Filter(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_virtual_interface_group.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -39,19 +29,10 @@ func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroup_Filter(t *testing.
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroup_LocalGatewayId(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_virtual_interface_group.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -67,21 +48,12 @@ func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroup_LocalGatewayId(t *
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroup_Tags(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	rName := acctest.RandomWithPrefix("tf-acc-test")
 	sourceDataSourceName := "data.aws_ec2_local_gateway_virtual_interface_group.source"
 	dataSourceName := "data.aws_ec2_local_gateway_virtual_interface_group.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
diff --git a/aws/data_source_aws_ec2_local_gateway_virtual_interface_groups_test.go b/aws/data_source_aws_ec2_local_gateway_virtual_interface_groups_test.go
index f05e20fef12..b0954b34fb0 100644
--- a/aws/data_source_aws_ec2_local_gateway_virtual_interface_groups_test.go
+++ b/aws/data_source_aws_ec2_local_gateway_virtual_interface_groups_test.go
@@ -2,7 +2,6 @@ package aws
 
 import (
 	"fmt"
-	"os"
 	"testing"
 
 	"github.com/hashicorp/terraform-plugin-sdk/helper/acctest"
@@ -10,19 +9,10 @@ import (
 )
 
 func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroups_basic(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_virtual_interface_groups.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -37,19 +27,10 @@ func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroups_basic(t *testing.
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroups_Filter(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_virtual_interface_groups.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -64,20 +45,11 @@ func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroups_Filter(t *testing
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayVirtualInterfaceGroups_Tags(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	rName := acctest.RandomWithPrefix("tf-acc-test")
 	dataSourceName := "data.aws_ec2_local_gateway_virtual_interface_groups.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
diff --git a/aws/data_source_aws_ec2_local_gateway_virtual_interface_test.go b/aws/data_source_aws_ec2_local_gateway_virtual_interface_test.go
index 52eb33d718d..b5c2df158f5 100644
--- a/aws/data_source_aws_ec2_local_gateway_virtual_interface_test.go
+++ b/aws/data_source_aws_ec2_local_gateway_virtual_interface_test.go
@@ -2,7 +2,6 @@ package aws
 
 import (
 	"fmt"
-	"os"
 	"regexp"
 	"testing"
 
@@ -11,19 +10,10 @@ import (
 )
 
 func TestAccDataSourceAwsEc2LocalGatewayVirtualInterface_Filter(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_virtual_interface.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -43,19 +33,10 @@ func TestAccDataSourceAwsEc2LocalGatewayVirtualInterface_Filter(t *testing.T) {
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayVirtualInterface_Id(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateway_virtual_interface.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
@@ -75,21 +56,12 @@ func TestAccDataSourceAwsEc2LocalGatewayVirtualInterface_Id(t *testing.T) {
 }
 
 func TestAccDataSourceAwsEc2LocalGatewayVirtualInterface_Tags(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	rName := acctest.RandomWithPrefix("tf-acc-test")
 	sourceDataSourceName := "data.aws_ec2_local_gateway_virtual_interface.source"
 	dataSourceName := "data.aws_ec2_local_gateway_virtual_interface.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
diff --git a/aws/data_source_aws_ec2_local_gateways_test.go b/aws/data_source_aws_ec2_local_gateways_test.go
index 7e8079739c0..03722635972 100644
--- a/aws/data_source_aws_ec2_local_gateways_test.go
+++ b/aws/data_source_aws_ec2_local_gateways_test.go
@@ -1,26 +1,16 @@
 package aws
 
 import (
-	"os"
 	"testing"
 
 	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
 )
 
 func TestAccDataSourceAwsEc2LocalGateways_basic(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	dataSourceName := "data.aws_ec2_local_gateways.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
diff --git a/aws/data_source_aws_eip_test.go b/aws/data_source_aws_eip_test.go
index bce7029ff1b..77028e3b314 100644
--- a/aws/data_source_aws_eip_test.go
+++ b/aws/data_source_aws_eip_test.go
@@ -2,7 +2,6 @@ package aws
 
 import (
 	"fmt"
-	"os"
 	"testing"
 
 	"github.com/hashicorp/terraform-plugin-sdk/helper/acctest"
@@ -157,33 +156,15 @@ func TestAccDataSourceAwsEip_Instance(t *testing.T) {
 }
 
 func TestAccDataSourceAWSEIP_CustomerOwnedIpv4Pool(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
-	// Local Gateway Route Table ID filtering in DescribeCoipPools is not currently working
-	poolId := os.Getenv("AWS_COIP_POOL_ID")
-	if poolId == "" {
-		t.Skip(
-			"Environment variable AWS_COIP_POOL_ID is not set. " +
-				"This environment variable must be set to the ID of " +
-				"a deployed Coip Pool to enable this test.")
-	}
-
 	dataSourceName := "data.aws_eip.test"
 	resourceName := "aws_eip.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:  func() { testAccPreCheck(t) },
+		PreCheck:  func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers: testAccProviders,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccDataSourceAWSEIPConfigCustomerOwnedIpv4Pool(poolId),
+				Config: testAccDataSourceAWSEIPConfigCustomerOwnedIpv4Pool(),
 				Check: resource.ComposeTestCheckFunc(
 					resource.TestCheckResourceAttrPair(resourceName, "customer_owned_ipv4_pool", dataSourceName, "customer_owned_ipv4_pool"),
 					resource.TestCheckResourceAttrPair(resourceName, "customer_owned_ip", dataSourceName, "customer_owned_ip"),
@@ -193,17 +174,19 @@ func TestAccDataSourceAWSEIP_CustomerOwnedIpv4Pool(t *testing.T) {
 	})
 }
 
-func testAccDataSourceAWSEIPConfigCustomerOwnedIpv4Pool(customerOwnedIpv4Pool string) string {
-	return fmt.Sprintf(`
+func testAccDataSourceAWSEIPConfigCustomerOwnedIpv4Pool() string {
+	return `
+data "aws_ec2_coip_pools" "test" {}
+
 resource "aws_eip" "test" {
-  customer_owned_ipv4_pool = %[1]q
+  customer_owned_ipv4_pool = tolist(data.aws_ec2_coip_pools.test.pool_ids)[0]
   vpc                      = true
 }
 
 data "aws_eip" "test" {
   id = aws_eip.test.id
 }
-`, customerOwnedIpv4Pool)
+`
 }
 
 func testAccDataSourceAwsEipConfigFilter(rName string) string {
diff --git a/aws/resource_aws_ebs_volume_test.go b/aws/resource_aws_ebs_volume_test.go
index bb0bf6d7c52..130e6c6f98d 100644
--- a/aws/resource_aws_ebs_volume_test.go
+++ b/aws/resource_aws_ebs_volume_test.go
@@ -3,7 +3,6 @@ package aws
 import (
 	"fmt"
 	"log"
-	"os"
 	"regexp"
 	"testing"
 
@@ -343,27 +342,20 @@ func TestAccAWSEBSVolume_multiAttach(t *testing.T) {
 
 func TestAccAWSEBSVolume_outpost(t *testing.T) {
 	var v ec2.Volume
+	outpostDataSourceName := "data.aws_outposts_outpost.test"
 	resourceName := "aws_ebs_volume.test"
 
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:      func() { testAccPreCheck(t) },
+		PreCheck:      func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		IDRefreshName: resourceName,
 		Providers:     testAccProviders,
 		CheckDestroy:  testAccCheckVolumeDestroy,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccAwsEbsVolumeConfigOutpost(outpostArn),
+				Config: testAccAwsEbsVolumeConfigOutpost(),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckVolumeExists(resourceName, &v),
-					resource.TestCheckResourceAttr(resourceName, "outpost_arn", outpostArn),
+					resource.TestCheckResourceAttrPair(resourceName, "outpost_arn", outpostDataSourceName, "arn"),
 				),
 			},
 			{
@@ -757,19 +749,23 @@ resource "aws_ebs_volume" "test" {
 }
 `
 
-func testAccAwsEbsVolumeConfigOutpost(outpostArn string) string {
-	return fmt.Sprintf(`
-data "aws_availability_zones" "available" {}
+func testAccAwsEbsVolumeConfigOutpost() string {
+	return `
+data "aws_outposts_outposts" "test" {}
+
+data "aws_outposts_outpost" "test" {
+  id = tolist(data.aws_outposts_outposts.test.ids)[0]
+}
 
 resource "aws_ebs_volume" "test" {
-  availability_zone = "${data.aws_availability_zones.available.names[0]}"
-  size = 1
-  outpost_arn = "%s"
+  availability_zone = data.aws_outposts_outpost.test.availability_zone
+  size              = 1
+  outpost_arn       = data.aws_outposts_outpost.test.arn
   tags = {
     Name = "tf-acc-volume-outpost"
   }
 }
-`, outpostArn)
+`
 }
 
 func testAccAwsEbsVolumeConfigMultiAttach(rName string) string {
diff --git a/aws/resource_aws_ec2_local_gateway_route_table_vpc_association_test.go b/aws/resource_aws_ec2_local_gateway_route_table_vpc_association_test.go
index 73c54247b55..80e2e8ca1e6 100644
--- a/aws/resource_aws_ec2_local_gateway_route_table_vpc_association_test.go
+++ b/aws/resource_aws_ec2_local_gateway_route_table_vpc_association_test.go
@@ -2,7 +2,6 @@ package aws
 
 import (
 	"fmt"
-	"os"
 	"testing"
 
 	"github.com/aws/aws-sdk-go/aws"
@@ -13,27 +12,18 @@ import (
 )
 
 func TestAccAwsEc2LocalGatewayRouteTableVpcAssociation_basic(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	rName := acctest.RandomWithPrefix("tf-acc-test")
 	localGatewayRouteTableDataSourceName := "data.aws_ec2_local_gateway_route_table.test"
 	resourceName := "aws_ec2_local_gateway_route_table_vpc_association.test"
 	vpcResourceName := "aws_vpc.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:     func() { testAccPreCheck(t) },
+		PreCheck:     func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers:    testAccProviders,
 		CheckDestroy: testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationDestroy,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfig(rName, outpostArn),
+				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfig(rName),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationExists(resourceName),
 					resource.TestCheckResourceAttrPair(resourceName, "local_gateway_id", localGatewayRouteTableDataSourceName, "local_gateway_id"),
@@ -52,25 +42,16 @@ func TestAccAwsEc2LocalGatewayRouteTableVpcAssociation_basic(t *testing.T) {
 }
 
 func TestAccAwsEc2LocalGatewayRouteTableVpcAssociation_disappears(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	rName := acctest.RandomWithPrefix("tf-acc-test")
 	resourceName := "aws_ec2_local_gateway_route_table_vpc_association.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:     func() { testAccPreCheck(t) },
+		PreCheck:     func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers:    testAccProviders,
 		CheckDestroy: testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationDestroy,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfig(rName, outpostArn),
+				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfig(rName),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationExists(resourceName),
 					testAccCheckResourceDisappears(testAccProvider, resourceAwsEc2LocalGatewayRouteTableVpcAssociation(), resourceName),
@@ -82,25 +63,16 @@ func TestAccAwsEc2LocalGatewayRouteTableVpcAssociation_disappears(t *testing.T)
 }
 
 func TestAccAwsEc2LocalGatewayRouteTableVpcAssociation_Tags(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	rName := acctest.RandomWithPrefix("tf-acc-test")
 	resourceName := "aws_ec2_local_gateway_route_table_vpc_association.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:     func() { testAccPreCheck(t) },
+		PreCheck:     func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers:    testAccProviders,
 		CheckDestroy: testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationDestroy,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags1(rName, outpostArn, "key1", "value1"),
+				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags1(rName, "key1", "value1"),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationExists(resourceName),
 					resource.TestCheckResourceAttr(resourceName, "tags.%", "1"),
@@ -113,7 +85,7 @@ func TestAccAwsEc2LocalGatewayRouteTableVpcAssociation_Tags(t *testing.T) {
 				ImportStateVerify: true,
 			},
 			{
-				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags2(rName, outpostArn, "key1", "value1updated", "key2", "value2"),
+				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags2(rName, "key1", "value1updated", "key2", "value2"),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationExists(resourceName),
 					resource.TestCheckResourceAttr(resourceName, "tags.%", "2"),
@@ -122,7 +94,7 @@ func TestAccAwsEc2LocalGatewayRouteTableVpcAssociation_Tags(t *testing.T) {
 				),
 			},
 			{
-				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags1(rName, outpostArn, "key2", "value2"),
+				Config: testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags1(rName, "key2", "value2"),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationExists(resourceName),
 					resource.TestCheckResourceAttr(resourceName, "tags.%", "1"),
@@ -141,7 +113,7 @@ func testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationExists(resourceName s
 		}
 
 		if rs.Primary.ID == "" {
-			return fmt.Errorf("No EC2 Fleet ID is set")
+			return fmt.Errorf("%s: missing resource ID", resourceName)
 		}
 
 		conn := testAccProvider.Meta().(*AWSClient).ec2conn
@@ -186,10 +158,12 @@ func testAccCheckAwsEc2LocalGatewayRouteTableVpcAssociationDestroy(s *terraform.
 	return nil
 }
 
-func testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigBase(rName, outpostArn string) string {
+func testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigBase(rName string) string {
 	return fmt.Sprintf(`
+data "aws_outposts_outposts" "test" {}
+
 data "aws_ec2_local_gateway_route_table" "test" {
-  outpost_arn = %[2]q
+  outpost_arn = tolist(data.aws_outposts_outposts.test.arns)[0]
 }
 
 resource "aws_vpc" "test" {
@@ -199,12 +173,12 @@ resource "aws_vpc" "test" {
     Name = %[1]q
   }
 }
-`, rName, outpostArn)
+`, rName)
 }
 
-func testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfig(rName, outpostArn string) string {
+func testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfig(rName string) string {
 	return composeConfig(
-		testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigBase(rName, outpostArn),
+		testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigBase(rName),
 		`
 resource "aws_ec2_local_gateway_route_table_vpc_association" "test" {
   local_gateway_route_table_id = data.aws_ec2_local_gateway_route_table.test.id
@@ -213,9 +187,9 @@ resource "aws_ec2_local_gateway_route_table_vpc_association" "test" {
 `)
 }
 
-func testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags1(rName, outpostArn, tagKey1, tagValue1 string) string {
+func testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags1(rName, tagKey1, tagValue1 string) string {
 	return composeConfig(
-		testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigBase(rName, outpostArn),
+		testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigBase(rName),
 		fmt.Sprintf(`
 resource "aws_ec2_local_gateway_route_table_vpc_association" "test" {
   local_gateway_route_table_id = data.aws_ec2_local_gateway_route_table.test.id
@@ -228,9 +202,9 @@ resource "aws_ec2_local_gateway_route_table_vpc_association" "test" {
 `, tagKey1, tagValue1))
 }
 
-func testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags2(rName, outpostArn, tagKey1, tagValue1, tagKey2, tagValue2 string) string {
+func testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigTags2(rName, tagKey1, tagValue1, tagKey2, tagValue2 string) string {
 	return composeConfig(
-		testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigBase(rName, outpostArn),
+		testAccAwsEc2LocalGatewayRouteTableVpcAssociationConfigBase(rName),
 		fmt.Sprintf(`
 resource "aws_ec2_local_gateway_route_table_vpc_association" "test" {
   local_gateway_route_table_id = data.aws_ec2_local_gateway_route_table.test.id
diff --git a/aws/resource_aws_ec2_local_gateway_route_test.go b/aws/resource_aws_ec2_local_gateway_route_test.go
index 712ce7e4237..0f9eb632be4 100644
--- a/aws/resource_aws_ec2_local_gateway_route_test.go
+++ b/aws/resource_aws_ec2_local_gateway_route_test.go
@@ -2,7 +2,6 @@ package aws
 
 import (
 	"fmt"
-	"os"
 	"testing"
 
 	"github.com/hashicorp/terraform-plugin-sdk/helper/resource"
@@ -10,15 +9,6 @@ import (
 )
 
 func TestAccAWSEc2LocalGatewayRoute_basic(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	rInt := randIntRange(0, 255)
 	destinationCidrBlock := fmt.Sprintf("172.16.%d.0/24", rInt)
 	localGatewayRouteTableDataSourceName := "data.aws_ec2_local_gateway_route_table.test"
@@ -26,7 +16,7 @@ func TestAccAWSEc2LocalGatewayRoute_basic(t *testing.T) {
 	resourceName := "aws_ec2_local_gateway_route.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:     func() { testAccPreCheck(t) },
+		PreCheck:     func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers:    testAccProviders,
 		CheckDestroy: testAccCheckAWSEc2LocalGatewayRouteDestroy,
 		Steps: []resource.TestStep{
@@ -49,21 +39,12 @@ func TestAccAWSEc2LocalGatewayRoute_basic(t *testing.T) {
 }
 
 func TestAccAWSEc2LocalGatewayRoute_disappears(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	rInt := randIntRange(0, 255)
 	destinationCidrBlock := fmt.Sprintf("172.16.%d.0/24", rInt)
 	resourceName := "aws_ec2_local_gateway_route.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:     func() { testAccPreCheck(t) },
+		PreCheck:     func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		Providers:    testAccProviders,
 		CheckDestroy: testAccCheckAWSEc2LocalGatewayRouteDestroy,
 		Steps: []resource.TestStep{
diff --git a/aws/resource_aws_eip_test.go b/aws/resource_aws_eip_test.go
index dadb43ffc0c..04fea445824 100644
--- a/aws/resource_aws_eip_test.go
+++ b/aws/resource_aws_eip_test.go
@@ -523,38 +523,20 @@ func testAccCheckAWSEIPDestroy(s *terraform.State) error {
 }
 
 func TestAccAWSEIP_CustomerOwnedIpv4Pool(t *testing.T) {
-	// Hide Outposts testing behind consistent environment variable
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
-	// Local Gateway Route Table ID filtering in DescribeCoipPools is not currently working
-	poolId := os.Getenv("AWS_COIP_POOL_ID")
-	if poolId == "" {
-		t.Skip(
-			"Environment variable AWS_COIP_POOL_ID is not set. " +
-				"This environment variable must be set to the ID of " +
-				"a deployed Coip Pool to enable this test.")
-	}
-
 	var conf ec2.Address
 	resourceName := "aws_eip.test"
 
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:      func() { testAccPreCheck(t) },
+		PreCheck:      func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		IDRefreshName: resourceName,
 		Providers:     testAccProviders,
 		CheckDestroy:  testAccCheckAWSEIPDestroy,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccAWSEIPConfigCustomerOwnedIpv4Pool(poolId),
+				Config: testAccAWSEIPConfigCustomerOwnedIpv4Pool(),
 				Check: resource.ComposeTestCheckFunc(
 					testAccCheckAWSEIPExists(resourceName, &conf),
-					resource.TestCheckResourceAttr(resourceName, "customer_owned_ipv4_pool", poolId),
+					resource.TestMatchResourceAttr(resourceName, "customer_owned_ipv4_pool", regexp.MustCompile(`^ipv4pool-coip-.+$`)),
 					resource.TestMatchResourceAttr(resourceName, "customer_owned_ip", regexp.MustCompile(`\d+\.\d+\.\d+\.\d+`)),
 				),
 			},
@@ -1179,11 +1161,13 @@ resource "aws_eip" "test" {
 }
 `
 
-func testAccAWSEIPConfigCustomerOwnedIpv4Pool(customerOwnedIpv4Pool string) string {
-	return fmt.Sprintf(`
+func testAccAWSEIPConfigCustomerOwnedIpv4Pool() string {
+	return `
+data "aws_ec2_coip_pools" "test" {}
+
 resource "aws_eip" "test" {
-  customer_owned_ipv4_pool = %[1]q
+  customer_owned_ipv4_pool = tolist(data.aws_ec2_coip_pools.test.pool_ids)[0]
   vpc                      = true
 }
-`, customerOwnedIpv4Pool)
+`
 }
diff --git a/aws/resource_aws_instance_test.go b/aws/resource_aws_instance_test.go
index c7942d053e1..17b28e86148 100644
--- a/aws/resource_aws_instance_test.go
+++ b/aws/resource_aws_instance_test.go
@@ -820,30 +820,21 @@ func TestAccAWSInstance_vpc(t *testing.T) {
 
 func TestAccAWSInstance_outpost(t *testing.T) {
 	var v ec2.Instance
+	outpostDataSourceName := "data.aws_outposts_outpost.test"
 	resourceName := "aws_instance.test"
 
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:        func() { testAccPreCheck(t) },
+		PreCheck:        func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		IDRefreshName:   resourceName,
 		IDRefreshIgnore: []string{"associate_public_ip_address"},
 		Providers:       testAccProviders,
 		CheckDestroy:    testAccCheckInstanceDestroy,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccInstanceConfigOutpost(outpostArn),
+				Config: testAccInstanceConfigOutpost(),
 				Check: resource.ComposeTestCheckFunc(
-					testAccCheckInstanceExists(
-						resourceName, &v),
-					resource.TestCheckResourceAttr(
-						resourceName, "outpost_arn", outpostArn),
+					testAccCheckInstanceExists(resourceName, &v),
+					resource.TestCheckResourceAttrPair(resourceName, "outpost_arn", outpostDataSourceName, "arn"),
 				),
 			},
 			{
@@ -3473,26 +3464,18 @@ resource "aws_instance" "test" {
 `)
 }
 
-func testAccInstanceConfigOutpost(outpostArn string) string {
-	return testAccLatestAmazonLinuxHvmEbsAmiConfig() + testAccAwsInstanceOutpostConfig(outpostArn) + fmt.Sprintf(`
-resource "aws_instance" "test" {
-  ami                         = "${data.aws_ami.amzn-ami-minimal-hvm-ebs.id}"
-  instance_type               = "m5.large"
-  subnet_id                   = "${aws_subnet.test.id}"
+func testAccInstanceConfigOutpost() string {
+	return composeConfig(
+		testAccLatestAmazonLinuxHvmEbsAmiConfig(),
+		`
+data "aws_outposts_outposts" "test" {}
 
-  root_block_device {
-    volume_type = "gp2"
-    volume_size = 8
-  }
-}
-`)
+data "aws_outposts_outpost" "test" {
+  id = tolist(data.aws_outposts_outposts.test.ids)[0]
 }
 
-func testAccAwsInstanceOutpostConfig(outpostArn string) string {
-	return fmt.Sprintf(`
-data "aws_availability_zones" "current" {
-  # Exclude usw2-az4 (us-west-2d) as it has limited instance types.
-  blacklisted_zone_ids = ["usw2-az4"]
+data "aws_outposts_outpost_instance_types" "test" {
+  arn = data.aws_outposts_outpost.test.arn
 }
 
 resource "aws_vpc" "test" {
@@ -3500,12 +3483,23 @@ resource "aws_vpc" "test" {
 }
 
 resource "aws_subnet" "test" {
-  cidr_block              = "10.1.1.0/24"
-  vpc_id                  = "${aws_vpc.test.id}"
-  availability_zone       = "${data.aws_availability_zones.current.names[0]}"
-  outpost_arn             = "%s"
+  availability_zone = data.aws_outposts_outpost.test.availability_zone
+  cidr_block        = "10.1.1.0/24"
+  outpost_arn       = data.aws_outposts_outpost.test.arn
+  vpc_id            = aws_vpc.test.id
 }
-`, outpostArn)
+
+resource "aws_instance" "test" {
+  ami           = data.aws_ami.amzn-ami-minimal-hvm-ebs.id
+  instance_type = tolist(data.aws_outposts_outpost_instance_types.test.instance_types)[0]
+  subnet_id     = aws_subnet.test.id
+
+  root_block_device {
+    volume_type = "gp2"
+    volume_size = 8
+  }
+}
+`)
 }
 
 func testAccInstanceConfigPlacementGroup(rName string) string {
diff --git a/aws/resource_aws_subnet_test.go b/aws/resource_aws_subnet_test.go
index ba90171670a..e843008e75f 100644
--- a/aws/resource_aws_subnet_test.go
+++ b/aws/resource_aws_subnet_test.go
@@ -3,7 +3,6 @@ package aws
 import (
 	"fmt"
 	"log"
-	"os"
 	"regexp"
 	"testing"
 	"time"
@@ -299,29 +298,20 @@ func TestAccAWSSubnet_availabilityZoneId(t *testing.T) {
 
 func TestAccAWSSubnet_outpost(t *testing.T) {
 	var v ec2.Subnet
+	outpostDataSourceName := "data.aws_outposts_outpost.test"
 	resourceName := "aws_subnet.test"
 
-	outpostArn := os.Getenv("AWS_OUTPOST_ARN")
-	if outpostArn == "" {
-		t.Skip(
-			"Environment variable AWS_OUTPOST_ARN is not set. " +
-				"This environment variable must be set to the ARN of " +
-				"a deployed Outpost to enable this test.")
-	}
-
 	resource.ParallelTest(t, resource.TestCase{
-		PreCheck:      func() { testAccPreCheck(t) },
+		PreCheck:      func() { testAccPreCheck(t); testAccPreCheckAWSOutpostsOutposts(t) },
 		IDRefreshName: resourceName,
 		Providers:     testAccProviders,
 		CheckDestroy:  testAccCheckSubnetDestroy,
 		Steps: []resource.TestStep{
 			{
-				Config: testAccSubnetConfigOutpost(outpostArn),
+				Config: testAccSubnetConfigOutpost(),
 				Check: resource.ComposeTestCheckFunc(
-					testAccCheckSubnetExists(
-						resourceName, &v),
-					resource.TestCheckResourceAttr(
-						resourceName, "outpost_arn", outpostArn),
+					testAccCheckSubnetExists(resourceName, &v),
+					resource.TestCheckResourceAttrPair(resourceName, "outpost_arn", outpostDataSourceName, "arn"),
 				),
 			},
 			{
@@ -554,11 +544,12 @@ resource "aws_subnet" "test" {
 }
 `
 
-func testAccSubnetConfigOutpost(outpostArn string) string {
-	return fmt.Sprintf(`
-data "aws_availability_zones" "current" {
-  # Exclude usw2-az4 (us-west-2d) as it has limited instance types.
-  blacklisted_zone_ids = ["usw2-az4"]
+func testAccSubnetConfigOutpost() string {
+	return `
+data "aws_outposts_outposts" "test" {}
+
+data "aws_outposts_outpost" "test" {
+  id = tolist(data.aws_outposts_outposts.test.ids)[0]
 }
 
 resource "aws_vpc" "test" {
@@ -569,13 +560,14 @@ resource "aws_vpc" "test" {
 }
 
 resource "aws_subnet" "test" {
-  cidr_block = "10.1.1.0/24"
-  vpc_id = "${aws_vpc.test.id}"
-  availability_zone       = "${data.aws_availability_zones.current.names[0]}"
-  outpost_arn = "%s"
+  availability_zone = data.aws_outposts_outpost.test.availability_zone
+  cidr_block        = "10.1.1.0/24"
+  outpost_arn       = data.aws_outposts_outpost.test.arn
+  vpc_id            = aws_vpc.test.id
+
   tags = {
     Name = "tf-acc-subnet-outpost"
   }
 }
-`, outpostArn)
+`
 }
diff --git a/docs/MAINTAINING.md b/docs/MAINTAINING.md
index 37d9059fcf1..5a073b256fe 100644
--- a/docs/MAINTAINING.md
+++ b/docs/MAINTAINING.md
@@ -388,12 +388,10 @@ Environment variables (beyond standard AWS Go SDK ones) used by acceptance testi
 | `AWS_CODEBUILD_GITHUB_SOURCE_LOCATION` | GitHub source URL for CodeBuild testing. CodeBuild must have access to this repository via OAuth or Source Credentials. Defaults to `https://github.com/hashibot-test/aws-test.git`. |
 | `AWS_COGNITO_USER_POOL_DOMAIN_CERTIFICATE_ARN` | Amazon Resource Name of ACM Certificate in `us-east-1` for Cognito User Pool Domain Name testing. |
 | `AWS_COGNITO_USER_POOL_DOMAIN_ROOT_DOMAIN` | Root domain name to use with Cognito User Pool Domain testing. |
-| `AWS_COIP_POOL_ID` | Identifier for EC2 Customer-Owned Pool related testing. Requires `AWS_OUTPOST_ARN`. |
 | `AWS_DEFAULT_REGION` | Primary AWS region for tests. Defaults to `us-west-2`. |
 | `AWS_EC2_EIP_PUBLIC_IPV4_POOL` | Identifier for EC2 Public IPv4 Pool for EC2 EIP testing. |
 | `AWS_GUARDDUTY_MEMBER_ACCOUNT_ID` | Identifier of AWS Account for GuardDuty Member testing. **DEPRECATED:** Should be replaced with standard alternate account handling for tests. |
 | `AWS_GUARDDUTY_MEMBER_EMAIL` | Email address for GuardDuty Member testing. **DEPRECATED:** It may be possible to use a placeholder email address instead. |
-| `AWS_OUTPOST_ARN` | Amazon Resource Name of Outpost for Outposts related testing. |
 | `DX_CONNECTION_ID` | Identifier for Direct Connect Connection testing. |
 | `DX_VIRTUAL_INTERFACE_ID` | Identifier for Direct Connect Virtual Interface testing. |
 | `EC2_SECURITY_GROUP_RULES_PER_GROUP_LIMIT` | EC2 Quota for Rules per Security Group. Defaults to 50. **DEPRECATED:** Can be augmented or replaced with Service Quotas lookup. |