Microsoft said on Wednesday it now has "all the pieces" it needs to build a successful advertising business after its acquisition of digital advertising company aQuantive Inc..

Microsoft Chief Advertising Strategist Yusuf Mehdi said the company does not need to acquire more scale in order to be a success.

Last week, Microsoft said it would acquire aQuantive for $6 billion to gain a foothold in the online advertising business dominated by its rivals Google and Yahoo.