From cloud platforms for medical data and hospital smart rooms to artificial intelligence and patient-engagement technologies, the giants of the digital world are threatening to disrupt healthcare. Leading the pack is IBM and its centerpiece offering Watson Health. In just the last six months, the company has announced major initiatives into healthcare including a partnership with clinical consultation provider Best Doctors to add Watson's cancer suite to employee benefits packages, a population health management alliance with Siemens Healthineers and an effort linking IBM's PowerAI deep learning software toolkit with NVIDIA's NVLink interconnect technology. The PowerAI is already being used improve diagnoses and care plans by sifting through patient data. In October, Big Blue announced a $200 million investment in its Watson Internet of Things global headquarters in Munich, Germany.