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Beginner

GitHub

In plain words

A website where code is stored and shared.

The fuller definition

GitHub is a service for hosting Git repositories and collaborating on software through features such as issues and pull requests.

How it fits together

Repository
Project and history
Pull request
Proposed change
Review
Discussion and checks

A simplified relationship, not a screenshot or a complete design.

A concrete example

A project proposes a change in a pull request so others can review the diff before merging.

The distinction that matters

Git is the version-control system; GitHub is a service built around it and related collaboration tools.

Related terms

APIs & software

Git

A tool that keeps a history of every change to a set of files, so you can go back or see who changed what.

APIs & software

Repository

A folder of files whose history is tracked by Git.

Products & model families

GitHub Copilot

An AI helper for programmers that suggests code as they type.

Where it is taught

Choose an AI tool around the work product

Source and further reading

GitHub · Documentation

The definition and example are written for this library. The link gives background, official documentation or legal authority as labelled. Legal scope depends on the jurisdiction and current text; product features depend on release and settings.