What is dot net?

Answer 1

It is a software framework developed by Microsoft. Check out this link for more info ↓
https://www.microsoft.com/net/

Answer 2

.NET Framework is set of tools, libraries, languages to build windows applications and runtime required to run those applications.

https://www.quora.com/What-is-NET-framework

https://www.quora.com/What-is-meant-by-NET-framework