The Alternative Media Gallery allows a preview of visual user-generated content (UGC) next to your Image Gallery. With this preview, users can immediately reference UGC for more context about the product they are considering.
Note: The Alternative Media Gallery was designed to address the fact that 56% of users begin exploring product images before they even review the title of a product (according to the Baymard PDP Study).
To learn more about implementing the Alternative Media Gallery, click here.