A month after launching, GitHub hosted one thousand repositories. Three years later, we host over three million. In the same time we’ve gone from one thousand users to over a million.

This type of scaling presents some interesting technical challenges. I’ll dig into our development workflow and how we address concepts like scaling, deployment, code review, and testing.

It also presents some interesting business challenges, too. How you grow your company from three employees, how you work in teams, and how you split your app up into services all help ensure that you’ll be able to react to your product’s growth.