An example
Kestrel & Vane licenses a creator's review video and runs it two ways with $500 each: as a normal ad from the brand page, and as a partnership ad showing the creator's handle with the brand as partner. In this test the partnership version earns the higher CTR, so the next creator contracts include partnership ad permission by default.
Why it matters
People respond differently to a person than to a logo. Partnership ads let a brand put paid reach behind creator content while keeping the creator's voice and handle. The creator has to grant permission through Meta's partnership tools, which also keeps the paid relationship visible to viewers.
How to improve it
Agree partnership ad permission and duration in the creator contract, not after the content performs. Test the same creative as a brand ad and a partnership ad to learn what the handle is worth for your account, and refresh creators as you would any creative, since one face can tire an audience.