Anyone who needs to advertise on Google Ads seriously — not just Search, but the whole surface Google now calls one product. Franchises and multi-location businesses that advertise on Google Ads across dozens of local pages fit here too, since every location can share one AI optimizer without sharing a budget. Agencies managing PPC across dozens of clients, local service businesses living or dying on Local Services Ads leads, ecommerce stores running Performance Max against a product feed, and anyone whose YouTube spend has been sitting in a separate silo from their Search account all land here for the same reason: Google Ads is the single largest advertising platform most of them touch, and it deserves to be managed like one integration instead of five separate logins.
Whether you already advertise on Google Ads at scale or you're weighing whether to advertise on Google Ads for the first time, the calculus is the same: it's usually the largest paid channel in the account, so it's the one that most rewards getting attribution right.