/azure-prepare

AZD IAC Rules

IaC rules for AZD projects. Additive — for Bicep, apply mcp_bicep_get_bicep_best_practices, mcp_bicep_list_avm_metadata, and mcp_bicep_get_az_resource_type_schema first; for Terraform, apply mcp_azure_mcp_azureterraformbestpractices first; then apply these azd-specific rules.

AVM Module Selection Order (MANDATORY)

Always prefer modules in provider-specific order:

For Bicep:

1. AVM Bicep Pattern Modules (AVM+AZD first when available)
2. AVM Bicep Resource Modules
3. AVM Bicep Utility Modules

For Terraform:

1. AVM Terraform Pattern Modules
2. AVM Terraform Resource Modules
3. AVM Terraform Utility Modules

If no pattern module exists for the active provider, default immediately to AVM modules in the same provider order (resource, then utility) instead of using non-AVM modules.

Retrieval Strategy (azure-documentation MCP primary + optional Context7)

• Primary (authoritative): Use mcp_azure_mcp_documentation (azure-documentation) for current Azure guidance and AVM integration documentation.
• Primary (module catalog): Use mcp_bicep_list_avm_metadata plus official AVM indexes to select concrete modules.
• Secondary (supplemental): Use Context7 only for implementation examples when mcp_azure_mcp_documentation does not provide enough detail. If Context7 is not available, instruct the user to install it: npx -y @upstash/context7-mcp@latest.

Validation Plan

Before finalizing generated guidance:

1. Verify the selected module path uses the required AVM order above.
2. Verify AVM+AZD pattern modules were checked first, and fallback moved to AVM resource/utility modules when no pattern module exists.
3. Verify Terraform guidance follows pattern -> resource -> utility ordering.
4. Include selected module names and source links in the plan/output for traceability.

File Structure

Parameter File Format

main.parameters.json uses ARM JSON syntax. Do not use .bicepparam syntax (using, param, readEnvironmentVariable()) in this file — azd will fail with a JSON parse error.

{
  "$schema": "https://schema.management.azure.com/schemas/2019-04-01/deploymentParameters.json#",
  "contentVersion": "1.0.0.0",
  "parameters": {
    "environmentName": { "value": "${AZURE_ENV_NAME}" },
    "location": { "value": "${AZURE_LOCATION}" }
  }
}

Use azd env set to supply values. During azd provision, azd substitutes ${VAR} placeholders with values from the environment.

Naming Convention

⚠️ Before generating any resource name in Bicep, check Resource naming rules for that resource type's valid characters, length limits, and uniqueness scope. Some resources forbid dashes or special characters, require globally unique names, or have short length limits. Adapt the pattern below accordingly.

Default pattern: {resourceAbbreviation}-{name}-{uniqueHash}

For resources that disallow dashes, omit separators: {resourceAbbreviation}{name}{uniqueHash}

• Resource abbreviations — recommended prefixes per resource type

var resourceSuffix = take(uniqueString(subscription().id, environmentName, location), 6)
// Adapt separator/format per resource naming rules
var defaultName = '${name}-${resourceSuffix}'
var alphanumericName = replace('${name}${resourceSuffix}', '-', '')

Forbidden: Hard-coded tenant IDs, subscription IDs, resource group names

Required Tags

Module Parameters

All modules must accept: name (string), location (string), tags (object)

Security

Recommended Outputs

azd reads output values from main.bicep and stores UPPERCASE names as environment variables (accessible via azd env get-values).

Templates

main.bicep:

targetScope = 'subscription'

param environmentName string
param location string

var resourceSuffix = take(uniqueString(subscription().id, environmentName, location), 6)
var tags = { 'azd-env-name': environmentName }

resource rg 'Microsoft.Resources/resourceGroups@2023-07-01' = {
  name: 'rg-${environmentName}'
  location: location
  tags: tags
}

module resources './modules/resources.bicep' = {
  name: 'resources'
  scope: rg
  params: { location: location, tags: tags }
}

// Outputs — UPPERCASE names become azd env vars
output AZURE_RESOURCE_GROUP string = rg.name
output API_URL string = resources.outputs.apiUrl

Child module:

targetScope = 'resourceGroup'

param name string
param location string = resourceGroup().location
param tags object = {}

var resourceSuffix = take(uniqueString(subscription().id, resourceGroup().name, name), 6)

⚠️ Container resources: CPU must use json() wrapper: cpu: json('0.5'), memory as string: memory: '1Gi'