> It is hard to think any other company that is not of Google's scale would be able to create their in-house source control system and complete a migration But

> It is hard to think any other company that is not of Google's scale would be able to create their in-house source control system and complete a migration But it is easy to think of a company that is of Google's scale failing to complete such a migration, wasting years with many projects not being able to migrate and then ultimately having two systems that everyone has to sync between. That they actually succeeded at doing it instead of failing is the impressive part.