What is Agency Ad Account? — Meta Ads Glossary — details
An agency ad account is created and held inside the agency's own verified Business Manager network rather than the client's, then shared with the client's team through partner access. This structure is common at high-spend tiers because agency-owned accounts typically carry higher trust, deeper account history, and often a pre-established line of credit that a brand-new client account wouldn't have.
Power Ads provides unlimited agency ad accounts as part of its model specifically so clients spending $100k+/mo are never bottlenecked by a single account's spend limit or a disable event; if one account is restricted, spend shifts to another without the campaign build starting from zero.

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Private Meta infrastructure for buyers spending $100,000+ a month. Unlimited accounts, our cards, a 24/7 operator line.