So what are you missing? Here’s a secret in the engineering department that has changed everything: the software repository. It’s been around for ages, and in recent years the flag-bearer of this technology is Github. It lets a developer “check out” a piece of code, download it to their computer, work on it, test it, check it back in, and then alert everyone that the work is done. The repo stores the history, lets multiple people work simultaneously in different places, but ultimately has all the knowledge, commentary, and work in one place.

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