Which placement types require creative attached in order to complete trafficking and generate placement tags? Select All Correct Responses

In-banner and In-stream video placements require an attached creative because these are ad formats that display visual or auditory content directly to the user. Without a creative (the actual ad content), there is nothing to show or play, making trafficking and tag generation impossible. Tracking placements, on the other hand, are used for measuring impressions or clicks on ads served by a different system; they don't display content themselves and therefore don't require an attached creative. Similarly, In-stream video tracking is solely for measurement and does not serve the video ad itself, so no creative is needed.