Module owners MUST set the default resource name prefix for child, extension, and interface resources to the associated abbreviation for the specific resource as documented in the following CAF article Abbreviation examples for Azure resources , if specified and documented. This reduces the amount of input values a module consumer MUST provide by default when using the module.

Modules MUST pass all tests that ensure compliance to AVM specifications. These tests MUST pass before a module version can be published.

Please note these are still under development at this time and will be published and available soon for module owners.

Modules SHOULD implement unit testing to ensure logic and conditions within parameters/variables/locals are performing correctly. These tests MUST pass before a module version can be published.

Unit Tests test specific module functionality, without deploying resources. Used on more complex modules. In Bicep and Terraform these live in tests/unit.

Modules SHOULD implement upgrade testing to ensure new features are implemented in a non-breaking fashion on non-major releases.

Modules MUST use static analysis, e.g., linting, security scanning (PSRule, tflint, etc.). These tests MUST pass before a module version can be published.

There may be differences between languages in linting rules standards, but the AVM core team will try to close these and bring them into alignment over time.

Modules MUST implement idempotency end-to-end (deployment) testing. E.g. deploying the module twice over the top of itself.

Modules SHOULD pass the idempotency test, as we are aware that there are some exceptions where they may fail as a false-positive or legitimate cases where a resource cannot be idempotent.

A module MUST have an owner that is defined and managed by a GitHub Team in the Azure GitHub organization.

Today this is only Microsoft FTEs, but everyone is welcome to contribute. The module just MUST be owned by a Microsoft FTE (today) so we can enforce and provide the long-term support required by this initiative.

A module owner MUST make the following GitHub teams in the Azure GitHub organization admins on the GitHub repo of the module in question:

Module owners MAY cross-references other modules to build either Resource or Pattern modules. However, they MUST be referenced only by a HashiCorp Terraform registry reference to a pinned version e.g.,

module "other-module" {
  source  = "Azure/xxx/azurerm"
  version = "1.2.3"
}

They MUST NOT use git reference to a module.

Authors SHOULD NOT output entire resource objects as these may contain sensitive outputs and the schema can change with API or provider versions. Instead, authors SHOULD output the computed attributes of the resource as discreet outputs. This kind of pattern protects against provider schema changes and is known as an anti-corruption layer .