I have a friend that works there. He said everything he does runs in App Engine, and when they go for a feature update, they just push it off to one of several

I have a friend that works there. He said everything he does runs in App Engine, and when they go for a feature update, they just push it off to one of several staging environments running App Engine, which is maintained by a team of devops engineers. From his perspective, it's just push a button and go. He didn't mention anything about a remote machine. Disclaimer: this was all information I gleaned from casual conversation, so take its accuracy with a grain of salt.