Joe Tucci CEO EMC

Now that Tucci has made it clear that he s not retiring anytime soon, he s free to keep building EMC into a mega enterprise powerhouse. EMC is already the biggest player in the enterprise storage market. Under Tucci, EMC hopes to become a cloud computing powerhouse, too, with help from the past and present CEOs of EMC subsidiary VMware: Paul Maritz, and Pat Gelsinger.