The software company is partnering with advertising holding company Interpublic Group in a deal that will make Microsoft the go-to ad technology provider for the U.S. offices of ad giant's agencies, including McCann-Erickson, Deutsch, Hill Holliday and The Martin Agency. Microsoft, of Redmond, Wash., slashed its undisclosed rates, so that its ad server Atlas will become the default technology to deliver ads and analyze their performance.

Read more: http://www.forbes.com/2010/02/08/microsoft-interpublic-partnership-google-rivalry-for-madison-avenue-cmo-network-microsoft-advertising.html?boxes=techchanneltopstories