Compute and web func

Function app naming convention

The CAF abbreviation for Function app is func. Names can be 2 to 60 characters long and allow alphanumerics and hyphens. The name must be globally unique across all of Azure.

Naming rules

CAF abbreviation	func
Length	2 to 60 characters
Allowed characters	Alphanumerics (a-z, A-Z, 0-9), hyphens
Scope of uniqueness	Global (must be unique across all of Azure)
CAF pattern	func-{workload}-{environment}-{region}-{instance}

Worth knowing: Globally unique name.

Rules follow Microsoft's resource naming rules and CAF abbreviations. Some resource types have extra start/end character restrictions, so verify against the official docs before locking in a convention.

Example names

Generated by the same engine as the name generator, so length and character rules are already applied.

Scenario	Generated name	Length
Payments API, production	`func-payments-prod-eus-001`	26/60
Web app, development	`func-webapp-dev-weu-002`	23/60
Analytics with company prefix	`func-contoso-analytics-stage-uks-001`	36/60

Naming in Terraform and Bicep

Build the name from variables so one module produces the right name in every environment.

Terraform

locals {
  function_app_name = "func-${var.workload}-${var.environment}-${var.region}-001"
}

Bicep

var functionAppName = 'func-${workload}-${environment}-${region}-001'

Generate Function app names for your workload

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See the full list of Azure resource naming rules or read the complete CAF naming guide.