Azure App Service is a Platform as a Service (PaaS) service that integrates Mobile Services and Microsoft Azure Websites. The Azure App Service allows you to quicklyconstruct and handle all your web and mobile applications at a single place. Not only that, but you can also build mobile applications quickly. Microsoft Azure App Service comes with a Mobile Apps Feature which allows you to build cross-platform applications for numerous mobile and desktop operating systems including Android, iOS, Mac, and Windows. With these applications, you can send push notifications to numerous people, authenticate your users, and create a custom backend.