Introduction to Version Control and Git BasicsLesson 1.1

What Is Version Control and Why Git?

version control, Git introduction, distributed version control, Git vs SVN, Git history

What Is Version Control and Why Git?

Version control is a system that tracks changes to files over time, allowing developers to recall specific versions later. In modern software development, version control is not optional — it is the foundation of every professional workflow.

DiagramCentralized vs Distributed Version Control

IMAGE PROMPT (replace this block with your generated image):

Flat comparison diagram on white background. Title: Centralized vs Distributed Version Control. Two columns separated by a bold vertical divider. Left column header: Centralized (SVN) with a red-tinted badge. Shows one central server box at top labeled Single Server — all history here (gray fill). Below: three developer boxes connected upward to the server only. Red warning icon beside server: Server down = no commits. Right column header: Distributed (Git) with a #3A5EFF-tinted badge. Shows four boxes arranged in a mesh — each box is a developer laptop icon labeled Full repo + full history (fill: light #e8ecff, border: #3A5EFF). Bidirectional arrows between all four nodes. Badge at bottom right: Any node = full backup in #3A5EFF. Clean sans-serif font, flat icons, white background, brand color #3A5EFF for distributed side.

Git is a distributed version control system created by Linus Torvalds in 2005. Unlike centralized systems such as SVN, every Git user has a complete copy of the repository on their local machine. This makes Git fast, reliable, and capable of working offline.

Key Advantages of Git

Git provides a full history of every change ever made to a project. You can branch freely to experiment without affecting the main codebase, merge work from multiple contributors, and roll back any mistake at any time.

GitHub, GitLab, and Bitbucket are hosting platforms built on top of Git. They add collaboration features such as pull requests, issue tracking, and code review. GitHub is the most widely used platform, hosting over 300 million repositories.

Centralized vs Distributed Version Control

In a centralized system, there is one central server and all history lives there. If the server goes down, no one can commit. In a distributed system like Git, every clone is a full backup. Teams can work independently and synchronize when ready.

This Git and GitHub tutorial will take you from installing Git to automating deployments, covering everything a professional developer needs.