.NET is a programming framework created by Microsoft that developers use to create software applications more efficiently. It is an integral part of many applications running on Windows and provides common functionality for those applications to run.
.NET is the Microsoft Web service strategy to connect information, people, systems, and devices through software. Integrated across the Microsoft platform, .NET technology provides the ability to quickly build, deploy, manage and use connected, security-enhanced solutions with Web services.
This is most preferred programming language in industry these days. After learning this course you would be able to develop robust, fast and secure applications.