These models combine components of the “managed service” and “self-management” models. For example, the price comparison portal might manage and optimize your product data feed, but you will manage the campaigns. Or vice versa: You manage your feed yourself, while the portal is responsible for campaign management.
There are variants of these hybrid models in which the price comparison portal creates a new Merchant Center account on your behalf, which you then link to an existing Google Ads account. You can use your existing Google Ads account to manage ads and free listings placed through the portal.
With other variants, Google will bill you directly for ads that are placed by a price comparison portal. This can be more useful if you manage your shopping campaigns yourself. In these cases you will usually receive a separate invoice from the price comparison portal.
In addition to the services described above, some price comparison portals may also offer other services.