Component-Based Software Engineering (CBSE) is a software development approach that emphasizes the design and construction of software systems using reusable components. These components are self-contained units that encapsulate specific functionality, allowing developers to assemble applications more efficiently. By reusing existing components, teams can reduce development time and improve software quality. In CBSE, components can be developed independently and integrated into larger systems. This modularity enables easier maintenance and updates, as changes to one component do not necessarily affect others. Overall, CBSE promotes flexibility and scalability in software development, making it a popular choice for modern applications.