Microsoft lost the man who introduced the company to open source technology, which led to cloud computing and many marketing services it now offers. Bill Hilf left Microsoft for Hewlett-Packard to transform the company "into a serious cloud player," reports Wired. The move puts him overseeing projects that directly compete with Windows Azure cloud services and Amazon Web Services. HP is one of several enterprise services like IBM, Adobe and Oracle that now support marketing services in the cloud.