PMNFR2 - Use Resource Modules to Build a Pattern Module

A Pattern Module SHOULD be built from AVM Resources Modules to establish a standardized code base and improve maintainability. If a valid reason exists, a pattern module MAY contain native resources (“vanilla” code) where it’s necessary. A Pattern Module MUST NOT contain references to non-AVM modules.

Valid reasons for not using a Resource Module for a resource required by a Pattern Module include but are not limited to:

• When using a Resource Module would result in hitting scaling limitations and/or would reduce the capabilities of the Pattern Module due to the limitations of Azure Resource Manager.
• Developing a Pattern Module under time constraint, without having all required Resource Modules readily available.

In the latter case, the Pattern Module SHOULD be updated to use the Resource Module when the required Resource Module becomes available, to avoid accumulating technical debt. Ideally, all required Resource Modules SHOULD be developed first, and then leveraged by the Pattern Module.