Platform as a Service (PaaS) provides developers with tools and services to build, run, and manage applications in the cloud without having to maintain the infrastructure. PaaS abstracts away the complexity of managing servers, storage, networks, and applications so developers can focus on building and deploying apps. It offers automated processes for continuous integration, delivery, and deployment using tools like Jenkins, Docker, Kubernetes, and OpenShift. PaaS solutions help separate development and operations duties and enable innovation by providing tools, customization, precision at scale.