We divide our creatives (and the content that we offer) in two different categories: Concepts: Developing new concepts refers to the testing of brand new designs, not based on existing compositions. And, when testing different concepts, we are testing different layouts, designs, elements, and ideas. So, the new winning concepts will become the drivers of our campaign’s performance because once we have a winning concept, we can scale it rapidly and create variations. Variations: Developing variations refers to testing different versions of a winning concept. Once you have tested our initial concepts and found what works and what doesn’t work, we can start testing variations of our winning concepts. Variation testing can further increase your campaign’s performance by keeping a version of your winning concepts alive longer. Variations might include changes in color, image, video length, video/image size, layout, and more.