Understanding Version Control and Why Git is Important

Version control is a system used to track changes in files over time to enable the collaborative work of numerous people on projects without interfering with each other’s projects. Version control would then be considered an “undo button” with a history of the parties and reasons for making the changes.
How Version Control is Essential
Let’s consider an example of working on an assignment where one might have to implement some novel functionalities along with maintaining a stable version for the final deployment. Without version control, one would have to deal with folders labeled “project_final,” “project_final_v2,” “project_actually_final” – what a nightmare to manage.
Enter Git: The Industry Standard
Git has become the widely used versioning tool because it is distributed, very fast, and powerful. With the older tool, you always needed server access, but with Git, you can work offline and only push the changes at the end. This is one of the reasons collaboration is seamless.
Branching: Parallel Development
Branching is Git’s most valuable feature. Branching involves creation of a separate timeline where new feature development may be done without impacting production code. Usually, it holds “main” or “master” code meant for production, while developers work on new feature branches.

For instance, if you were working on an e-commerce site adding payment functionality, you would create the “payment-feature” branch. This way, developments on the site will not be disrupted since other developers work on their own branches at the same time.
Merging: Bringing It All Together
Now that your feature is finished and tested, you can now merge your feature back to the main branch. Git has the intelligence to do the merge, and if both developers have worked on the same file, Git points out the conflict, and the developers can manually resolve them.
Collaborative Workflows
Contemporary development teams utilize Git workflows such as GitHub Flow or GitFlow. Here is a general overview of what is involved:

• Creating a branch for your task
• Commits (snapshots) while working on a project
• Uploading your branch to an external repository
• Creating a pull request for review by the team
• Accepting approved changes into trunk

This approach allows for code quality checks by code reviews and also preserves a clean, auditable history.
The Bottom Line
Git is more than just an application. It is the underlying infrastructure of the software development process. Git allows developers and development teams to work effectively, try and learn from failures, and document the entire project. As an individual developer or an organization, knowing Git is an absolute necessity while developing software.