In the Platform-as-a-Service (PaaS) model, developers essentially rent everything they need to build an application, relying on a cloud provider for development tools, infrastructure, and operating systems. This is one of the three service models of cloud computing. PaaS simplifies the process of web application development significantly. From the perspective of a developer, it enables backend management from behind the scenes.
PaaS can be accessed over any internet connection, making it possible to build an entire application in a web browser. It enables developers to work from any geography in the world as the development environment is not hosted locally.