This is my first Mac and I'm wondering: is there no Microsoft Internet Explorer for Mac OS X?

I am a web developer and I need IE (not really lol) but so as I Google it, I see some questionable websites coming up on my Google search but none of them the actual Microsoft site.

My main reason is that I need it for browser testing and whatnot and so I see Firefox, Chrome, Safari obviously, but no IE.

So the question is: is there/where do I get Internet Explorer for Mac?