Deploy a single App Engine site to respond at a custom apex domain and its www host name. What steps are required?

To deploy an App Engine site to a custom domain and its www subdomain, you must first verify ownership of the domain using Google Search Console (formerly Webmaster Central). This proves you have control over the domain. After verification, you configure your domain's DNS records. For App Engine, you create a CNAME record for both the apex domain (e.g., example.com) and the www subdomain (e.g., www.example.com) that points to ghs.googlehosted.com. This is Google's standard host for custom domains on App Engine, allowing it to route traffic correctly. Incorrect options: Creating an A record pointing to a global App Engine IP address is not the standard or recommended method for App Engine custom domains, which use CNAMEs to ghs.googlehosted.com for flexibility and Google's routing infrastructure. dispatch.yaml is used for routing requests to different services within an App Engine application based on URL paths, not for configuring custom domains or subdomains themselves. DNS records handle the domain mapping.