Platform as a service (PaaS) is a complete development and deployment environment in the cloud. PaaS includes infrastructure—servers, storage, and networking—but also middleware, development tools, business intelligence (BI) services, database management systems, and more. PaaS is designed to support thecomplete web application lifecycle: building, testing, deploying, managing, and updating. References: https://azure.microsoft.com/en-us/overview/what-is-paas/