Component-Based Architecture is a software design approach that structures applications as a collection of reusable components. Each component encapsulates specific functionality and can be developed, tested, and maintained independently. This modularity allows for easier updates and scalability, as components can be replaced or upgraded without affecting the entire system. In this architecture, components communicate through well-defined interfaces, promoting loose coupling and enhancing flexibility. Popular frameworks like React and Angular utilize this approach, enabling developers to build complex user interfaces by assembling smaller, manageable pieces. This leads to improved collaboration and faster development cycles in software projects.