http://tl-ph.facebookwkhpilnemxj7asaniu7vnjjbiltxjqhye3mhbshg7kx5tfyd.onion/business/help/170372403538781
Dynamic creative takes multiple media, such as images and videos, and multiple ad components, such as images, videos, text, audio and calls-to-action, and then mixes and matches them in new ways to improve your ad performance. It allows you to automatically create personalized creative variations for each person who views your ad, with results that are scalable.