Chapter Eight
Working Together: Version Control & Collaboration
Software is a team sport, and the tool that makes teamwork possible is version control — the system that records every change and lets many people share one codebase without chaos. This chapter covers it at the concept level: why it exists, its core model of commits and branches, the pull request and code review that guard quality, and the strategies teams use to organize their work.
Two people editing the same document at once is a recipe for lost work — unless they have a system built for it. Software teams have exactly that system, and it's the quiet backbone of every project: version control. This chapter explains what it is and why it matters.
This is a concept tour. The most common version-control tool is Git, and learning to actually use it — the commands, the day-to-day moves — is a whole course of its own. Here we cover the ideas, so the words make sense and you know what the tool is for; the dedicated Git, GitHub & GitHub Actions course is where you learn to drive it.