Custom domains with Azure Static Web Apps

By default, Azure Static Web Apps provides an auto-generated domain name for your website, but you can point a custom domain to your site. Free SSL/TLS certificates are automatically created for the auto-generated domain name and any custom domains you may add.

When you map a custom domain to a static web app, you have a few options available to you. You can configure subdomains and an apex domain.

The following table includes links to articles that demonstrate how to configure a custom domain based provider type. 1

Action Using... Using...
Set up a domain with the www subdomain Azure DNS External provider
Set up an apex domain Azure DNS External provider

1 Some registrars like GoDaddy and Google don't support domain records that affect how you configure your apex domain. Consider using Azure DNS with these registrars to set up your apex domain.


Adding a custom domain to a preview environment is not supported. Unicode domains, including Punycode domains and the xn-- prefix are also not supported.

About domains

Setting up an apex domain is a common scenario to configure once your domain name is set up. Creating an apex domain is achieved by configuring an ALIAS or ANAME record or through CNAME flattening. Some domain registrars like GoDaddy and Google don't support these DNS records. If your domain registrar doesn't support all the DNS records you need, consider using Azure DNS to configure your domain.

Alternatively, for domain registrars that don't support ALIAS records, ANAME records or CNAME flattening, you can configure an A record for your static web app. This directs traffic to a single regional host of your static web app. Using A records is not recommended as your application will no longer benefit from its global distribution, and this may affect your application performance if your traffic is globally distributed.

The following are terms you'll encounter as you set up a custom domain.

  • Apex or root domains: Given the domain, the www prefix is known as the subdomain, while the remaining segment of is referred to as the apex domain.

  • Domain registrar: A registrar verifies the availability of a domain sells the rights to purchase a domain name.

  • DNS zone: A Domain Name System (DNS) zone hosts the DNS records associated to a specific domain. There are various records available which direct traffic for different purposes. For example, the domain may contain several DNS records. One record handles traffic for (for a mail server), and another (for a website).

  • DNS hosting: A DNS host maintains DNS servers that resolve a domain name to a specific IP address.

  • Name server: A name server is responsible for storing the DNS records for a domain.

Next steps

Use the following links for steps on how to set up your domain based on your provider.