APIs

ASP.NET includes ASP.NET Web API for creating rich REST-ful Web Services that return JSON, XML, or any kind of content the web supports! ASP.NET Web APIs can provide data services to mobile apps like Windows Phones, iPhones, Android and more. ASP.NET Web APIs can be used in any ASP.NET Web Application, including ASP.NET MVC, Web Forms, or Web Pages – it's all One ASP.NET.

Real-time

ASP.NET SignalR is a new library for ASP.NET developers makes real-time bi-directional communication between client and server a reality. ASP.NET SignalR enables new standards like Web Sockets while gracefully falling back to support older browsers. ASP.NET SignalR can support JavaScript clients, as well as clients on Android, iPhone, and all C# clients like Windows Phone and Windows 8.

Mobile

ASP.NET can also power mobile applications with responsive design frameworks like Twitter Bootstrap included out of the box with VS2013. You can use any CSS framework or open grid system you prefer, or perhaps select a powerful mobile system like jQuery Mobile or Sencha and great mobile applications with PhoneGap. The choice is yours, it's all possible with ASP.NET.

IDE (Integrated Development Environment)

Visual Studio and ASP.NET include powerful tools within the IDE. We've got best-of-class HTML5, CSS3 and JavaScript editors that have the web baked in at their core. You'll know which CSS selectors work in your browser, get IntelliSense with your JavaScript, and then instantly refresh a dozen connected browsers with Browser Link. Now, commit to source control then publish your website to any server or the cloud.