Data and applications used to be hosted locally, on organizations’ own premises. But the cloud-computing revolution has changed this default. Data is moving to the cloud and data gravity is changing how software is run in organizations. Gartner says that more than $1 trillion in IT spending will be directly or indirectly affected by the shift to cloud during the next five years. But what is data gravity and where does the term come from? And what does it mean for data analytics in the cloud age?