"Usage data" refers to information or data that is collected about how something is being used or utilized. It helps to understand patterns, trends, and behaviors related to the usage of a particular product, service, or technology. Full definition
For example, what if your business could collect and analyze usage data from customers, and send out automated alerts suggesting upgrade opportunities when the customer's needs exceed the current solution? (inc.com)
Detailed energy usage data allows staff to audit buildings and make continuous improvements to reduce energy use. (franklinresources.com)
One way of measuring engagement is to track product usage data. (blog.kissmetrics.com)