Azure naming · Microsoft.Web/serverFarms

asp App Service plan

The compute that hosts web apps and function apps.

Naming constraints

CAF abbreviationasp
Resource typeMicrosoft.Web/serverFarms
Length1–60 characters
CaseMixed case
Allowed charactersAlphanumerics and hyphens (Unicode that maps to Punycode is also accepted).
Uniqueness Resource group
SeparatorHyphen

Source: Microsoft Learn, “Naming rules and restrictions for Azure resources”, checked October 2026. Abbreviation from the Cloud Adoption Framework.

Example & copy-ready

A worked name for workload app, env prod, region weu, instance 001.

Example name
asp-app-prod-weu-001 Valid
Validation regex for CI checks or pre-commit hooks (.NET and JavaScript) 
^[A-Za-z0-9-]{1,60}$
Bicep naming expression 
var name = take('asp-${workload}-${env}-${region}-${instance}', 60)
Terraform local 
locals {
  name = substr(join("-", compact(["asp", var.workload, var.env, var.region, var.instance])), 0, 60)
}

Azure Policy can't evaluate regular expressions, so a policy can check the asp prefix but not the full format. Run the regex in your pipeline, or audit existing names on a schedule.

« App Service Function app »

Uniqueness scope

Unique within the parent resource group. The same name can be reused in a different resource group.

Open in the name generator

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