Google has been allowed to complete its £1.55bn acquisition of online advertising group DoubleClick after getting the green light from European competition authorities.
The acquisition will allow Google to strengthen its online ad business against the likes of Yahoo and Microsoft.
US authorities cleared the acquisition three months ago. The acquisition was originally announced almost a year ago.
The European Commission said the deal would be unlikely to have any harmful effects on consumers.
Microsoft and others had objected to the deal on privacy grounds, claiming Google's ability to combine its own data about individuals' search engine requests with site visit data collected by DoubleClick would be against consumers' interests.
But the European Commission was only interested in any anti-trust considerations, and Google came through.