Healthcare accounts for about 10 percent of global GDP, according to the World Bank.
In the United States, where spending hit $2.8 trillion in 2013, it's almost twice that. In the last 12 years, healthcare has almost single-handedly driven American job growth and now accounts for 13 percent of the U.S. workforce.
But healthcare remains an IT laggard. At many facilities, fax machines reign supreme. Doctors carry pagers. Patients receive appointment reminders via snail mail. What electronic data does exist frequently gets lost or stolen. It's no surprise, then, that the world's largest IT firms clamor to bring 21st century analytics, mobility, collaboration, security and services to healthcare.