A pre built structure that gives you tools and rules to build apps faster.
A framework is a pre-built collection of code that provides a structure and set of tools for building applications. Unlike a Library (which you call when you need it), a framework calls your code -- it provides the architecture and you fill in the specifics. Think of it like a house frame: the walls, roof, and plumbing are already in place, and you choose the paint, furniture, and decorations.
Frameworks handle CSS styling (Tailwind CSS), DOM manipulation, responsive design, routing, and Rendering. Examples include Next.js (web), React Native (mobile), Django (Python web), and Flutter (mobile). Vercel hosts framework-based apps. Frameworks are a key part of your Tech Stack, often bundled with Node.js runtimes.
A framework differs from a library: React is technically a library, while Next.js (built on React) is a framework. Frameworks are central to Frontend and Full Stack development.
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