This document is an issue of the McKinsey Quarterly from 2016. It contains articles on data analytics and big data. The opening article provides an overview of the data revolution and argues that data analytics requires a reimagining of business models. It notes that data assets, analytics methodologies, and data-driven solutions require companies to contemplate their own data strategy and opportunities. The issue aims to help leaders focus on the essential purposes, uses, and questions surrounding analytics to guide their organizations toward a more digital, data-driven future.