What Is Visual Studio Code (VS Code) and What Is It Used For?

Visual Studio Code is a free, open-source code editor that runs on Windows, macOS, and Linux. You can write code by hand, hand off tasks to an AI coding agent, or mix both approaches in the same tool.

It is not the same as Visual Studio. This editor is lighter, starts in seconds, and works across every operating system. Visual Studio is a full IDE built mainly for .NET and C++ on Windows.

What makes VS Code different

Most code editors do one thing well. This one does several things well in one window.

The AI agent support is the biggest change since the editor first shipped. You can switch the Chat view to agent mode, describe a feature in natural language, and watch the agent create files, install packages, run tests, and fix problems on its own.

You can also stay in the editor and use Copilot inline suggestions while you type. You decide how much the agent does.

Where VS Code fits

This editor works for almost any kind of development.

Web development. JavaScript, TypeScript, React, Next.js, Vue, Svelte, HTML, and CSS all have first-class support. Emmet shortcuts and IntelliSense speed up front-end work.

Backend and API development. Python, Node.js, Go, Rust, Java, and C# all work through extensions. The integrated terminal and debugger cover the full build-and-test loop.

AI and data work. Jupyter Notebooks run inside the editor. Python data science extensions handle pandas, matplotlib, and TensorFlow workflows.

Cloud and DevOps. Docker, Kubernetes, Azure, and AWS extensions let you manage containers and cloud resources from the editor. Remote development extensions connect you to code running on SSH servers, WSL, or Dev Containers.

Writing and documentation. Markdown preview, spell-check extensions, and Git-based workflows make this editor a solid tool for technical writers and open-source maintainers.

The Extension Marketplace

Extensions are how this editor becomes whatever you need it to be. Each extension adds a language, theme, tool, or integration.

A few examples of what extensions provide:

• Language support for Python, Go, Rust, C++, and dozens more
• Linting and formatting with Prettier, ESLint, and Black
• Docker and Kubernetes management
• Database explorers for PostgreSQL, MongoDB, and Redis
• AI tools beyond Copilot, including custom agents and MCP server integrations

Extensions install from the Visual Studio Marketplace. Most are free. Some have paid tiers. Always check the publisher name, install count, and recent update date before installing.

GitHub Copilot and AI features

This editor includes built-in support for GitHub Copilot, the AI coding assistant from GitHub.

Sign in with a GitHub account to enable it. The Copilot Free plan gives you a monthly allowance of inline code suggestions and AI chat credits at no cost. Paid Copilot plans unlock higher usage limits and access to more language models.

What Copilot can do inside the editor:

• Suggest the next line or block of code while you type
• Answer questions about your codebase in the Chat view
• Generate code from natural-language prompts
• Run as an autonomous agent that plans, edits, and verifies across multiple files
• Use custom instructions, custom agents, and MCP servers that you configure for your project

If you prefer not to use a Copilot subscription, you can bring your own language model API key and still use AI features.

How this editor compares to alternatives

This editor hits the middle ground. It is faster than a full IDE and more capable out of the box than a minimal text editor.

Limitations to know

No tool is perfect. This editor is built on Electron, which means it uses more memory than a native editor like Sublime Text or Vim. On machines with less than 4 GB of RAM, large projects with many extensions can feel slow.

It is also not a full replacement for Visual Studio if you work on large .NET Framework or C++ solutions with complex project types. For those, Visual Studio still has deeper integration.

AI features need an internet connection and a GitHub account. Offline coding works fine, but Copilot suggestions stop when you go offline.

Next steps

Now that you know what this editor is, install it on your operating system and open your first project.

If you are on Windows 11, start with how to download and install on Windows. On macOS, learn how to install and add the shell command. On Linux, follow the install guide for Ubuntu, Debian, Fedora, and Arch.

Once installed, walk through the beginner setup guide to configure essential settings, install extensions, and create your first project.