What problem does Git solve?

#Problems before Git:

• code was stored in files like final.js, final_v2.js, final_last.js;
• impossible to tell who made a change and why;
• hard to roll back to a working version;
• simultaneous work by multiple developers led to conflicts;
• high risk of losing code.

#Problems Git solves:

#1. Change history

Git stores every state of the project:

• who made the change;
• when;
• which files changed exactly;
• why (commit message).

#2. Collaboration

Multiple developers can:

• work in parallel;
• create their own branches;
• safely merge changes.

#3. Control and safety

• easy to roll back to a stable version;
• mistakes can be fixed without losing data;
• change history is never erased.

#4. Risk-free experiments

You can:

• test new features in separate branches;
• avoid breaking the main version of the project;
• delete failed attempts without consequences.

#Short answer for an interview:

Git solves the problem of version control and team development, letting you safely track changes, work in parallel, and manage the project's history.