Mapping custom domains | App Engine standard environment | Google Cloud Documentation

You can use a custom domain rather than the default address that App Engine provides for your app. To use a custom domain, map the domain to your app, then update your DNS records. You can map a naked domain, such as example.com or a subdomain, such as subdomain.example.com. You can also use wildcards to map subdomains. By default, when you map a domain to your app, App Engine issues a managed cer