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Okay.

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So let's begin with a very important question.

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What exactly is get?

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So get is what's known as a version control system, sometimes abbreviated as VCs.

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Not only is it a VCs, it's actually the world's most popular version control system.

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So what exactly is a version control system?

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It doesn't sound all that glamorous.

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Essentially, version control is software that helps track and manage changes to a set of files over

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time.

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Also, doesn't sound all that glamorous or exciting, but hugely important.

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Think of companies like Facebook or Google with huge code bases, thousands of files and thousands of

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developers.

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They're all working in parallel and making changes day to day.

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How do you manage those and track those changes and combine them and undo changes?

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That is the role of a version control system like Git.

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In general, most version control systems allow things like revisiting earlier versions of files, comparing

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changes made between different versions and different files.

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Undoing changes, sharing changes with other people get does this and more.

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We're going to go into this in just a little bit, but that's a general intro to this concept of version

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control.

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And to be clear, Git is just one of many version control options out there over the years.

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They've kind of come and gone, but some of the more well-known ones include Subversion, CVS and Mercurial,

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and they all have similar goals of helping developers or helping users track changes to projects over

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time.

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But they do have significant differences in how they operate, the syntax and how they achieve those

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goals.

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But the good news for us, I mean, obviously this is a good course, so we're going to learn git but

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there's a good reason to learn get it is the clear winner if there ever was a version control system

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war get is clearly the most popular these days.

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This is the most recent data I could find from three years ago 2018 StackOverflow Developer Survey.

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Nearly 90% of respondents reported that Git was their version control system of choice.

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And the thing is, in the last few years, this survey has just stopped asking this question.

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It's abandoned it because it's just so clear the number is probably more like 95% these days of developers

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that use Git.

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So we're here to learn Git.

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That's good news for us.

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I'll end by just showing you what Git calls itself on the Get Home page.

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It's a free and open source distributed version control system designed to handle everything from small

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to very large projects with speed and efficiency.

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It's easy to learn.

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We'll see about that.

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It's not bad to learn, but I wouldn't say it's painless and it has a tiny footprint with lightning

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fast performance.

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It outclasses other tools like subversion cves.

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Oh boy, look at that.

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Trash talking, the competition.

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Anyway, the stuff we care about is up here.

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It is a version control system that is git at its core.

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It helps users manage changes to projects over time.

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In the next video, we'll talk in more concrete terms about what Git actually does.