When Google introduces their Google+ to the world, that time Google + team decided to customize the page for Google+ URL that points directly to the user accounts.

In order to qualify for a custom URL you have meet the following requirements:

You have to separate profile photo for you profile, at least 10 followers and an account over 30 days old. That’s enough. The Google+ pages for the both local and non local organizations will has to meet different criteria to gain custom URL.