Most ecommerce dashboards tell you what happened yesterday. By the time a founder opens their 9am report, the budget's already been spent, the stockout's already cost sales, and the ad set that tanked overnight has been live for twelve hours. Real-time ecommerce analytics closes that gap, not by giving you more data, but by giving you the data fast enough to act on it. This guide covers what "real-time" actually means, which metrics deserve that speed, and how to set it up without turning your reporting stack into a second full-time job.