What is google places submission ? and how can we perform it ?

First time I read about Google place submissions here.

You can find more information here https://support.google.com/places/bin/answer.py?hl=en&answer=142902 its very useful tool in SEO & users point of view.

Google places is the listing of your website in Google places for which you should have your own contact number and mail id for confirmation and verification. Google places is for business listing.

Google Place allows you to control what information Google has and presents to searchers about your business.