Why these formats come later
Both Sponsored Brands and Sponsored Display require Brand Registry. They arrive after your enrollment clears, and after Sponsored Products is doing real work. That timing is a feature, not a delay. These formats spend upstream of the click that closes a sale. Upstream spend only pays back when the destination converts.
The prerequisite is the base covered in the earlier advertising guides. You need a Sponsored Products program that already turns clicks into orders at a defensible efficiency. Layering upper-funnel budget onto a listing that does not convert does not fix the listing. It amplifies a leak by paying to send more traffic to it. Fix conversion first, then reach for reach.
What Sponsored Brands does
Sponsored Brands occupies upper-funnel real estate. Those are the banner-style placements a shopper meets early, before they have chosen a product. Its job is discovery and recall. It puts your brand and a set of products in front of undecided shoppers. They are still deciding what to buy, not just which listing to click.
Because the format works early in the journey, judging it on last-click efficiency alone understates it. A shopper who first meets your brand through a Sponsored Brands placement may return later. They convert through an organic search or a Sponsored Products click. The brand impression did work that the closing click gets credited for.