Amid the noise and clamor surrounding big data, and as self-service for business information (BI) and analytics becomes a reality, a major change is happening behind the scenes. Schema-on-read-based data exploration is key to removing the expertise bottleneck that has plagued data warehouses (DWs) and centralized BI efforts since DWs began. These tech-driven changes also mean profound disruption to roles like information architect and data manager. This report helps guide enterprise architects through these changes and prepare for a data-driven future. This is an update of a previously published report; Forrester reviews and updates it periodically for continued relevance and accuracy.