Fresh off the completed acquisition of DoubleClick (our coverage), Google isn’t wasting any time revamping their ad business. Today, the company will announce a new service called Ad Manager that allows users to manage their own ad sales and inventory, The Wall Street Journal reports.

Other services such as AdBrite allow users to sell ad space directly to companies and insert them on their pages, but Google hadn’t ventured into that method. Instead, the company used AdSense, which mainly allowed users to rotate through pre-sold advertisements from publishers that were AdSense partners. The 900-pound gorilla that is Google just entered the room.