Code repositories are an important technology in IT. They provide several things:
- Code sharing across geographically dispersed team members
- Versioning of software
- A (relatively) safe, 'central' storage location for collections of software
'Relatively safe' means that the code base is safe from the failure of a single (local) machine. The code is stored on a distributed set of servers, which appear as a single, central location to end users. This makes things even safer -- if one datacenter goes down, another can pick up the load. Theoretically, the whole distributed system could come down, but it's highly unlikely
It's common practice these days for teams to use repositories (or, 'repos') to store and version their software. You will here at ETSU, if you haven't already. As such, Visual Studio Code has built-in functionality for interacting with repos. This is nice, since the command line interface ('git') isn't very user friendly