An apparel company is launching a baseball uniform line and wants to advertise their video ads within baseball game inventory.Before setting up their campaign in Campaign Manager 360, what's the first thing they should do?

Analysis of Correct Answer(s) - The correct first step is to confirm publisher requirements. Before any creative development or campaign setup begins, it's essential to understand the technical specifications of the inventory where the ads will run. This includes not just dimensions but also file sizes, formats (e.g., VAST/VPAID for video), and other publisher-specific guidelines. This foundational step ensures that all subsequent work, from creative production to trafficking, is done correctly from the start, preventing costly and time-consuming revisions.

Analysis of Incorrect Options - Adjust the file size of each video ad: This is a necessary action, but it can only be performed after you have confirmed the publisher's maximum file size limits. - Create their companion banner ads: Similar to the above, you cannot create companion banners until you know the exact dimensions and specifications required by the publisher. - Send the video ad tag to each of the desired publishers: This is one of the final steps in the trafficking process. Placement tags are generated in Campaign Manager 360 only after the campaign structure and creatives are built and assigned. It is premature to send tags before the campaign has even been set up.