doc: HashiCorp Terraform Version Compatibility Matrix (#1969)

* HashiCorp Compatibility Matrix Updates * Update README.md * Update index.html.markdown * Update README.md * Update index.html.markdown * Update index.html.markdown * Update README.md * Update index.html.markdown * Create 1.16.0-upgrade-guide.html.markdown * Update 1.16.0-upgrade-guide.html.markdown * Update website/docs/guides/1.16.0-upgrade-guide.html.markdown * Update website/docs/index.html.markdown
mongodb · Feb 23, 2024 · e22e066 · e22e066
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diff --git a/README.md b/README.md
@@ -16,8 +16,9 @@ Bugs should be filed under the Issues section of this repo.
 
 Feature requests can be submitted at https://feedback.mongodb.com/forums/924145-atlas - just select the Terraform plugin as the category or vote for an already suggested feature.
 
-## Requirements
-- [Terraform Version](https://www.terraform.io/downloads.html) While we support minimum of HashiCorp Terraform version 1.0+ (as we have migrated to [Plugin Protocol Version 6](https://developer.hashicorp.com/terraform/plugin/terraform-plugin-protocol#protocol-version-6)), for your safety we strongly recommend only consuming versions of Terraform that are currently receiving Security/Maintenance Updates. For latest Terraform versions see: https://endoflife.date/terraform 
+## Requirements  
+- [HashiCorp Terraform Version Compatibility Matrix](https://registry.terraform.io/providers/mongodb/mongodbatlas/latest/docs#hashicorp-terraform-version-compatibility-matrix) 
+
 - [Go Version](https://golang.org/doc/install) 1.21 (to build the provider plugin)
 
 ## Using the Provider

diff --git a/website/docs/guides/1.16.0-upgrade-guide.html.markdown b/website/docs/guides/1.16.0-upgrade-guide.html.markdown
@@ -0,0 +1,28 @@
+---
+layout: "mongodbatlas"
+page_title: "MongoDB Atlas Provider 1.16.0: Upgrade and Information Guide"
+sidebar_current: "docs-mongodbatlas-guides-1160-upgrade-guide"
+description: |-
+MongoDB Atlas Provider 1.16.0: Upgrade and Information Guide
+---
+
+# MongoDB Atlas Provider 1.16.0: Upgrade and Information Guide
+
+The Terraform MongoDB Atlas Provider version 1.16.0 has a number of new and exciting features.
+
+**New Resources, Data Sources, and Features:**
+
+
+
+**Deprecations and Removals:**
+
+- The HashiCorp Terraform Version Compatibility Matrix has been published for the Terraform MongoDB Atlas Provider. See full details at https://registry.terraform.io/providers/mongodb/mongodbatlas/latest/docs#hashicorp-terraform-version-compatibility-matrix
+
+
+### Helpful Links
+
+* [Report bugs](https://github.com/mongodb/terraform-provider-mongodbatlas/issues)
+
+* [Request Features](https://feedback.mongodb.com/forums/924145-atlas?category_id=370723)
+
+* [Contact Support](https://docs.atlas.mongodb.com/support/) covered by MongoDB Atlas support plans, Developer and above.
diff --git a/website/docs/index.html.markdown b/website/docs/index.html.markdown
@@ -179,13 +179,20 @@ In addition to [generic `provider` arguments](https://www.terraform.io/docs/conf
 
 For more information on configuring and managing programmatic API Keys see the [MongoDB Atlas Documentation](https://docs.atlas.mongodb.com/tutorial/manage-programmatic-access/index.html).
 
-## HashiCorp Terraform Version Requirement
-| MongoDB Atlas Provider version  | Required Terraform version |
-| ------------- | ------------- |
-| `1.12.0` and above  | `1.0+`  |
-| below `1.12.0`  | `0.13+` |
-
-* While we support minimum of HashiCorp Terraform version 1.0+ (as we have migrated to [Plugin Protocol Version 6](https://developer.hashicorp.com/terraform/plugin/terraform-plugin-protocol#protocol-version-6)), for your safety we strongly recommend only consuming versions of Terraform that are currently receiving Security/Maintenance Updates. For latest Terraform versions see: https://endoflife.date/terraform 
+## [HashiCorp Terraform Version](https://www.terraform.io/downloads.html) Compatibility Matrix
+
+| HashiCorp Terraform Release | HashiCorp Terraform Release Date  | HashiCorp Terraform Full Support End Date  | MongoDB Atlas Support End Date |
+|:-------:|:------------:|:------------:|:------------:|
+| 1.7.x | 2024-01-17 | 2026-01-31 | 2026-01-31 |
+| 1.6.x | 2023-10-04 | 2025-10-31 | 2025-10-31 |
+| 1.5.x | 2023-06-12 | 2025-06-30 | 2025-06-30 |
+| 1.4.x | 2023-03-08 | 2025-03-31 | 2025-03-31 |
+| 1.3.x | 2022-09-21 | 2024-09-30 | 2024-09-30 |
+| 1.2.x | 2022-05-18 | 2024-05-31 | 2024-05-31 |
+
+For the safety of our users, we require only consuming versions of HashiCorp Terraform that are currently receiving Security / Maintenance Updates. For more details see [Support Period and End-of-Life (EOL) Policy](https://support.hashicorp.com/hc/en-us/articles/360021185113-Support-Period-and-End-of-Life-EOL-Policy).   
+
+HashiCorp Terraform versions that are not listed on this table are no longer supported by MongoDB Atlas. For latest HashiCorp Terraform versions see [here](https://endoflife.date/terraform ).
 
 ## Supported OS and Architectures
 As per [HashiCorp's recommendations](https://developer.hashicorp.com/terraform/registry/providers/os-arch), we fully support the following operating system / architecture combinations: