By this chapter, you've learned how to create and manage your infrastructure with Terraform. However, all topics we discussed apply only to a single-person operations department. If you are the only one using Terraform in your team, then you have all the knowledge already. Eventually, operations teams will reduce in size, and what required dozen of system admins in the past will require only a couple of them, the ones that are experienced in both operations and software development. Even then, it's not a single person, but at least a couple of them: having just one infrastructure engineer in the company is an example of a single point of failure.

And when you have multiple colleagues working on Terraform templates, you have a whole new package of problems to solve. How do you store your templates? How do you organize and split them? Where do you store them? And where do you store the state file? How do you roll out changes to production? And how do...