What is the mechanism of the `ghs.google.com` domain?

Question

If I want to bind a domain name to my app on the GAE (Google App Engine), I should add a CNAME record to ghs.google.com. I\'d lik

Answer 1

Your browser sends a request to Google's server with the Host: yoursite.com header.

Google looks up this hostname in a (very large) database mapping hostnames to websites, then serves the corresponding website.

This database includes App Engine apps, Google Apps aliases, BlogSpot blogs, and other things.