Accenture

Accenture has grown into a juggernaut—$43.2 billion in annual revenue, nearly 500,000 employees across 52 countries—by betting big on its technology business. Sixty-five percent of the professional services firm’s revenues now come from digital, cloud, and security—or, as Accenture calls them, “The New.” And now it’s looking even further into the future: About 100 Accenture employees are working on quantum computing. Acquisitions are another key aspect of CEO Julie Sweet’s growth strategy; the company’s April purchase of ad agency Droga5 helped juice Accenture Interactive revenues over the $10 billion mark.