What Is Gulp
Gulp is a streaming build system. You might have heard about and used grunt already. But lately gulp is getting more popular. It can do amazing stuff like compiling LESS/Sass, JS files, live reloading web pages and lots more.

Why Use Gulp
It can save you a lot of time by automating several tasks. And the best thing is you have the power to tell it what to do, unlike relying on third party tools to implement certain functionality. In short you can build your own automation tool as per your set of needs.