'Git push' is a command that's used to send the commits you've made on your local repository to a remote repository. Here's a simple example scenario: 1. You clone (i.e., copy) a remote repository to your local machine. You now have a local repository. 2. You make some changes to the cloned repository on your machine, creating new versions of the project. Each of these versions is tracked by Git as a 'commit'. 3. To share these changes with your team or to backup your work on the remote repository, you use the 'git push' command. This sends your new commits to the remote repository. The command works by communicating to the remote repository, mentioning which branch's changes you'd like to push. If a named branch does not exist on the remote repository, it's created. If it does exist, 'git push' updates it to match your local commit history. Keep in mind that you must have write access to the remote repository to push changes. Also, 'git push' won't work if there are new changes on the remote repository that you don't have on your local repository - this is to prevent data loss. You must first 'fetch' the new changes and merge them with your changes before you can push. A typical 'git push' command takes the following format: git push where is the remote repository you'd like to push to, and is the branch you'd like to push. Pushing is core to the collaborative aspect of Git. It allows multiple developers to work simultaneously on a project and share their changes with each other.