Let’s take one of the largest retailers—Walmart. Start by visualizing one five-drawer filing cabinet. Now, think of a room filled with 60 million five-drawer file cabinets. That’s how much data comes from all of the Walmart stores every hour. And as retailers install more sensors to add advanced predictive analytics to real-time sales and customer behavior, that figure of 60 million filing cabinets worth of data every hour is going to increase. For example, retailers are beginning to use mannequins with cameras in their eyes so they can see who’s looking at them and whether they’re male or female, pregnant or not, thin or heavy, etc. And that’s just one little data point.