diff --git a/sqlserver/datadog_checks/sqlserver/config_models/__init__.py b/sqlserver/datadog_checks/sqlserver/config_models/__init__.py
new file mode 100644
index 0000000000000..ba42dbdc7ffb0
--- /dev/null
+++ b/sqlserver/datadog_checks/sqlserver/config_models/__init__.py
@@ -0,0 +1,18 @@
+# (C) Datadog, Inc. 2021-present
+# All rights reserved
+# Licensed under a 3-clause BSD style license (see LICENSE)
+from .instance import InstanceConfig
+from .shared import SharedConfig
+
+
+class ConfigMixin:
+    _config_model_instance: InstanceConfig
+    _config_model_shared: SharedConfig
+
+    @property
+    def config(self) -> InstanceConfig:
+        return self._config_model_instance
+
+    @property
+    def shared_config(self) -> SharedConfig:
+        return self._config_model_shared
diff --git a/sqlserver/datadog_checks/sqlserver/config_models/defaults.py b/sqlserver/datadog_checks/sqlserver/config_models/defaults.py
new file mode 100644
index 0000000000000..2387d994dc2d2
--- /dev/null
+++ b/sqlserver/datadog_checks/sqlserver/config_models/defaults.py
@@ -0,0 +1,144 @@
+# (C) Datadog, Inc. 2021-present
+# All rights reserved
+# Licensed under a 3-clause BSD style license (see LICENSE)
+from datadog_checks.base.utils.models.fields import get_default_field_value
+
+
+def shared_custom_metrics(field, value):
+    return get_default_field_value(field, value)
+
+
+def shared_global_custom_queries(field, value):
+    return get_default_field_value(field, value)
+
+
+def shared_service(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_adoprovider(field, value):
+    return 'SQLOLEDB'
+
+
+def instance_ao_database(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_autodiscovery_exclude(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_autodiscovery_include(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_availability_group(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_command_timeout(field, value):
+    return 5
+
+
+def instance_connection_string(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_connector(field, value):
+    return 'adodbapi'
+
+
+def instance_custom_queries(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_database(field, value):
+    return 'master'
+
+
+def instance_database_autodiscovery(field, value):
+    return False
+
+
+def instance_database_autodiscovery_interval(field, value):
+    return 3600
+
+
+def instance_db_fragmentation_object_names(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_driver(field, value):
+    return 'SQL Server'
+
+
+def instance_dsn(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_empty_default_hostname(field, value):
+    return False
+
+
+def instance_ignore_missing_database(field, value):
+    return False
+
+
+def instance_include_ao_metrics(field, value):
+    return False
+
+
+def instance_include_db_fragmentation_metrics(field, value):
+    return False
+
+
+def instance_include_fci_metrics(field, value):
+    return False
+
+
+def instance_include_instance_metrics(field, value):
+    return True
+
+
+def instance_include_task_scheduler_metrics(field, value):
+    return False
+
+
+def instance_min_collection_interval(field, value):
+    return 15
+
+
+def instance_only_emit_local(field, value):
+    return False
+
+
+def instance_password(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_proc_only_if(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_proc_only_if_database(field, value):
+    return 'master'
+
+
+def instance_service(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_stored_procedure(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_tags(field, value):
+    return get_default_field_value(field, value)
+
+
+def instance_use_global_custom_queries(field, value):
+    return 'true'
+
+
+def instance_username(field, value):
+    return get_default_field_value(field, value)
diff --git a/sqlserver/datadog_checks/sqlserver/config_models/instance.py b/sqlserver/datadog_checks/sqlserver/config_models/instance.py
new file mode 100644
index 0000000000000..cb3215873d541
--- /dev/null
+++ b/sqlserver/datadog_checks/sqlserver/config_models/instance.py
@@ -0,0 +1,83 @@
+# (C) Datadog, Inc. 2021-present
+# All rights reserved
+# Licensed under a 3-clause BSD style license (see LICENSE)
+from __future__ import annotations
+
+from typing import Any, Mapping, Optional, Sequence
+
+from pydantic import BaseModel, root_validator, validator
+
+from datadog_checks.base.utils.functions import identity
+from datadog_checks.base.utils.models import validation
+
+from . import defaults, validators
+
+
+class CustomQuery(BaseModel):
+    class Config:
+        allow_mutation = False
+
+    columns: Optional[Sequence[Mapping[str, Any]]]
+    query: Optional[str]
+    tags: Optional[Sequence[str]]
+
+
+class InstanceConfig(BaseModel):
+    class Config:
+        allow_mutation = False
+
+    adoprovider: Optional[str]
+    ao_database: Optional[str]
+    autodiscovery_exclude: Optional[Sequence[str]]
+    autodiscovery_include: Optional[Sequence[str]]
+    availability_group: Optional[str]
+    command_timeout: Optional[int]
+    connection_string: Optional[str]
+    connector: Optional[str]
+    custom_queries: Optional[Sequence[CustomQuery]]
+    database: Optional[str]
+    database_autodiscovery: Optional[bool]
+    database_autodiscovery_interval: Optional[int]
+    db_fragmentation_object_names: Optional[Sequence[str]]
+    driver: Optional[str]
+    dsn: Optional[str]
+    empty_default_hostname: Optional[bool]
+    host: str
+    ignore_missing_database: Optional[bool]
+    include_ao_metrics: Optional[bool]
+    include_db_fragmentation_metrics: Optional[bool]
+    include_fci_metrics: Optional[bool]
+    include_instance_metrics: Optional[bool]
+    include_task_scheduler_metrics: Optional[bool]
+    min_collection_interval: Optional[float]
+    only_emit_local: Optional[bool]
+    password: Optional[str]
+    proc_only_if: Optional[str]
+    proc_only_if_database: Optional[str]
+    service: Optional[str]
+    stored_procedure: Optional[str]
+    tags: Optional[Sequence[str]]
+    use_global_custom_queries: Optional[str]
+    username: Optional[str]
+
+    @root_validator(pre=True)
+    def _initial_validation(cls, values):
+        return validation.core.initialize_config(getattr(validators, 'initialize_instance', identity)(values))
+
+    @validator('*', pre=True, always=True)
+    def _ensure_defaults(cls, v, field):
+        if v is not None or field.required:
+            return v
+
+        return getattr(defaults, f'instance_{field.name}')(field, v)
+
+    @validator('*')
+    def _run_validations(cls, v, field):
+        if not v:
+            return v
+
+        return getattr(validators, f'instance_{field.name}', identity)(v, field=field)
+
+    @root_validator(pre=False)
+    def _final_validation(cls, values):
+        return validation.core.finalize_config(getattr(validators, 'finalize_instance', identity)(values))
diff --git a/sqlserver/datadog_checks/sqlserver/config_models/shared.py b/sqlserver/datadog_checks/sqlserver/config_models/shared.py
new file mode 100644
index 0000000000000..1033560ba7398
--- /dev/null
+++ b/sqlserver/datadog_checks/sqlserver/config_models/shared.py
@@ -0,0 +1,44 @@
+# (C) Datadog, Inc. 2021-present
+# All rights reserved
+# Licensed under a 3-clause BSD style license (see LICENSE)
+from __future__ import annotations
+
+from typing import Any, Mapping, Optional, Sequence
+
+from pydantic import BaseModel, root_validator, validator
+
+from datadog_checks.base.utils.functions import identity
+from datadog_checks.base.utils.models import validation
+
+from . import defaults, validators
+
+
+class SharedConfig(BaseModel):
+    class Config:
+        allow_mutation = False
+
+    custom_metrics: Optional[Sequence[Mapping[str, Any]]]
+    global_custom_queries: Optional[Sequence[Mapping[str, Any]]]
+    service: Optional[str]
+
+    @root_validator(pre=True)
+    def _initial_validation(cls, values):
+        return validation.core.initialize_config(getattr(validators, 'initialize_shared', identity)(values))
+
+    @validator('*', pre=True, always=True)
+    def _ensure_defaults(cls, v, field):
+        if v is not None or field.required:
+            return v
+
+        return getattr(defaults, f'shared_{field.name}')(field, v)
+
+    @validator('*')
+    def _run_validations(cls, v, field):
+        if not v:
+            return v
+
+        return getattr(validators, f'shared_{field.name}', identity)(v, field=field)
+
+    @root_validator(pre=False)
+    def _final_validation(cls, values):
+        return validation.core.finalize_config(getattr(validators, 'finalize_shared', identity)(values))
diff --git a/sqlserver/datadog_checks/sqlserver/config_models/validators.py b/sqlserver/datadog_checks/sqlserver/config_models/validators.py
new file mode 100644
index 0000000000000..9d0b0155542cb
--- /dev/null
+++ b/sqlserver/datadog_checks/sqlserver/config_models/validators.py
@@ -0,0 +1,3 @@
+# (C) Datadog, Inc. 2021-present
+# All rights reserved
+# Licensed under a 3-clause BSD style license (see LICENSE)