Recently, the McKinsey Global Institute (MGI) reported that previous research on big data may have underestimated its future business impact. Healthcare, in particular, has captured less than 30% of the potential value that MGI predicted more than five years ago. What are the key challenges? Many companies still struggle to incorporate data and analytics into a core strategic vision. In other words, to make data work for you, you have to be clear on its purpose and how you’ll put it into action.