AmazonAws.com - What is this?

I recently started a forum of mine.. New to vBulletin and making a website etc.. noob..

Today i noticed.. whenever there is a new thread made or comment posted my forum suddenly has a lot of guest activity and when i checked and resolved the IP's of the guests.. it showed me as amazonaws - http://awesomescreenshot.com/02e18yaubd

what is this actually? Is this good or bad? What should i do with it?

Kindly help me out with this.. And sorry if i posted it in the wrong section.

Regards,
A.

So... Did you Google Amazonaws. I don't think so.

Just visit AWS(amazon web services) website;

Amazon Web Services (AWS) - do a search for more than that, Google is your friend so learn how to use it

lol beat me to it