What is Windows Phone ?Windows Phone is a smartphone operating system developed by Microsoft. Windows Phone is the successor to Windows Mobile.What types of Applications I can develop ?There are several types of application categories :1. Games 2. Entertainment3. Social4. Tools and Productivity5. Information & PromotionWhy to build Mobile applications ?1. Making Money 2. Contact with Customers3. Offer mobile version for Desktop/Web Application4. Publish Media 5. Deliver location based information And More !What is the Development Environment for building Windows Phone Applications?Environment : Visual Studio 2012 or Visual Studio 2013 Programming Languages : C# , VB , C++ , HTML5 & CSSSDK : Windows Phone SDK 8.0Windows Phone Development Life Cycle Well, It's a very easy & organized Development Life Cycle :1. Planning : It's the first important step in building any application . Good Planning for your application well produce a successful application. 2. Develop Application : You can develop windows phone application using Visual Studio ( If you are new to windows phone development or you still don't have the required programming skills ; You can use Windows Phone App Studio : A web based development environment that allow you to create and build rich windows Phone Application without writing Code !) .3. It's time to run and test our application on Windows Phone Emulator or test it on a real device.4. Finally : It's time to publish your application to the store !Now. Monitor your application and read the feedback from users about your application !