For a consumer to play any piece of video content from a protected video service, the device they are using must obtain a matching DRM license. Unique licenses are required for each different piece of content, for each individual device on which that content is played, and (typically) must be refreshed/re-requested on a periodic basis (say every 24hrs). The count of licenses delivered over time is therefore a very good measure of the popularity of a given piece of content. Please read on in this document to dive deeper into each software component & technology involved in making this magic happen!