What is Google Doubleclick?

I can not understand what is https://www.google.com/intl/ru/doubleclick/publish...?
It allows you to provide your website for advertising type Adsense or where you can buy advertising on other websites?
What the new order is there to do? =/
July 9th 19 at 13:23
1 answer
July 9th 19 at 13:25
May clarify the situation - izgoba.com/16394.html

Find more questions by tags GoogleGoogle Adsense