Answer - 1. Silverlight is a web based technology, launched by Microsoft in April 2007. Silverlight is considered as a competitor to Adobe's Flash. 2. Silverlight is Microsoft's implementation of a cross-browser, cross-platform client framework that allows designers and developers to deliver Rich Internet Applications (RIA) embedded in Web pages. 3. Silverlight is a browser plug-in approximately 6MB in size; it is client-side free software, with an easy and fast (less than 10 sec) one time installation available for any client side browser. 4. It supports advanced data integration, multithreading, HD video using IIS Smooth Streaming, and built-in content protection. Silverlight enables online and offline applications for a broad range of business and consumer scenarios. 5. One of the design goals of the Silverlight technology is to fill the gap between Windows applications and Web applications in terms of creating Graphical User Interfaces (GUI). 6. Silverlight applications are run as client-side applications without the need to refresh the browser to update the UI. However, because of the built-in .NET framework, Silverlight applications can easily integrate with server-side controls and services. Using Silverlight's implementation of the .NET framework, developers can easily integrate existing libraries and code into Silverlight applications.