Azure Web App and Azure Mobile App are essentially the same service under Azure App Service; they share the same infrastructure, tools, and settings. The difference is mostly historical—Mobile Apps were originally designed with features for mobile backends like push notifications, authentication, and offline sync. Today, those same mobile-focused features are also available in Web Apps through the “Mobile” section in settings. In practice, both can run the same backend code and support mobile features, so there’s no real functional difference now—Mobile App is just a Web App with mobile-friendly defaults.