Build iPhone and Android apps in Visual Studio

"At its TechEd conference today, Microsoft announced the next step in its "mobile first, cloud first" strategy with a preview of Apache Cordova support in Visual Studio. Cordova is a toolkit for building apps for iOS, Android, and Windows using HTML, CSS, and JavaScript. With the Cordova integration, Visual Studio will directly support building apps for all of these platforms."

http://arstechnica.com/information-technology/2014/05/visual-studio-goes-cross-platform-with-cordova-integration-from-microsoft/