A Business Manager hierarchy lets a parent entity retain oversight across several child Business Managers — commonly one per client, market, or vertical — isolating risk so that a restriction on one child doesn't necessarily cascade to the others, while still allowing centralized reporting and asset management from the top.
Agencies running dozens of clients across sensitive verticals like iGaming and crypto favor this structure specifically for risk isolation: a policy issue traced to one client's Business Manager stays contained rather than threatening the ad accounts of every other client under the same umbrella.

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