Microsoft Releases Visual Studio Code

Microsoft made Visual Studio Code broadly available in 2015 as a lightweight, cross-platform editor built with web technologies. Unlike the full Visual Studio IDE, VS Code was designed to start quickly and support many languages through extensions.

The application used Electron, which combines Chromium with Node.js to build desktop software using HTML, CSS, and JavaScript. Its Language Server Protocol later separated editor interfaces from language-specific analysis engines, allowing features such as completion and diagnostics to be shared across different tools.

VS Code’s extension marketplace became central to its success. Instead of Microsoft trying to build every language and workflow into the core product, communities could add debuggers, formatters, remote-development tools, notebooks, and AI assistants independently.