Publishers can have a variety of inventory sources – such as websites, or mobile or connected TV apps – where their video content is distributed. Potential placements for advertisements are generated on these sites. These inventory sources belonging to a specific publisher are called sites and apps.
In the smartx platform, sites and apps from different publishers can be combined within content channels to bundle similar content (e.g. news, politics, or based on IAB categories). See also Content Channel and Placement Groups.