Platform as a Service (PaaS) is a cloud computing model that provides a comprehensive environment for developing, testing, deploying, and managing applications. PaaS delivers infrastructure components such as servers, storage, and networking, along with middleware, development tools, and database management systems. Developers can build and customize applications without worrying about the underlying hardware or software layers. This model enhances productivity by simplifying the development process, offering scalability, and reducing the need for extensive IT infrastructure management. PaaS enables organizations to accelerate application development and deployment while focusing on innovation and business logic.