1. IBM Global Services
2014 Rank: 1
Top Executive: Virginia Rometty, President & CEO
Location: Armonk, N.Y.
IBM Global Services makes up the Global Business Services and Global Technology Services segments of IBM. Together, the Armonk, N.Y.-based company is the largest service provider on the planet, pulling in over $54.9 billion in revenue in 2014.
That said, the Global Business Services business dropped four percent in 2014 to $37.13 billion, while the Technology Services business dropped three percent to $17.82 billion.
One of the highlights of the year for IBM Global Services -- a blockbuster deal to deliver enterprise focused mobile applications for Apple's iOS. The first wave of apps -- targeted at security and big data -- hit the market in late 2014.