Does anyone know what this ad position is called and how to advertise in it.

I've looked everywhere I can think of, Brands, Display, general . Can't seem to find any reference to it. Raised a case with Amazon and they denied that it even existed and had no idea how it can be achieved. Advertising on virtually all of our product pages and it makes it look like they are the seller of our product, due to it's position and the fact that they sell some products in the same vein as us.

any help would be appreciated

Regards

Adrian