In this section, we're going to look at the supreme overlord when it comes to version control systems (VCSs). There have been others, and there will be more to come, but right now, there's Git, and it's by far the most widely used and most popular (though not without its fair share of criticism).
Git was initially developed by Linus Torvalds—yes, that same Linus Torvalds who kick-started Linux kernel development, though these days it's primarily developed by Junio C Hamano, and many other talented hackers. It's found in software development primarily, but is increasingly used to store configuration for things like Ansible, Terraform, and any other infrastructure as code tool, enabling a historic and versioned picture of your infrastructure.