This uses a new feature named multi-image extensions and is available currently only in the US. ... you can increase attention to your existing text ads by displaying a carousel of up to five images." ...

While Instagram has long supported landscape and portrait-style media for regular posts, it only allowed square images for the popular carousel option until now.

Google is also testing a format for the featured snippets that lets you see multiple images in the position zero slot with a carousel format. So you can flip through the images in the featured ...