https://www.cnet.com/news/how-facebook-operations-got-10-times-faster-while-getting-10-times-bigger/

Maybe you've heard of Facebook's old engineering mantra: Move fast and break things. The company dumped the "break things" part years ago, but today it's moving faster than ever.

At its own Systems@Scale conference Thursday, Facebook engineers detailed several parts of a computing infrastructure massive enough to serve the 2.2 billion people who use Facebook. One of those details: Facebook now updates its service's core software at least 10 times more frequently than it did about a decade ago.