How do Facebook ad agencies manage their ad accounts?

First, let’s understand what is the Facebook Business Manager?

As the mane suggests, a Facebook business manager is a tool that allows you to manage multiple Facebook pages, business assets, and ad accounts, as well as Instagram accounts and product catalogs, in one place. It also allows you to grant full or partial access to team members based on their roles. This means you can seamlessly delegate tasks between multiple employees securely.

For a Facebook ad agency in India, this means you can link multiple clients' Facebook pages to your Facebook business manager account without linking your or your employees’ personal Facebook accounts as administrators.

Mainly they are managing their ad account in Facebook business Manager. They are using business Managers because -

a) You can create a separate account for a separate company and manage all the campaigns/clients from that account.

b) It divides your personal account ( and your personal ads account) from the ad accounts for those pages.

c) You can set up a separate billing method for each client.

d) It’s also good for keeping safe historical data if your individual client accounts get suddenly removed that could interrupt a key campaign and you’ll definitely lose your historical ad data.

e) If your client has already an ad account then request him to make you the advertiser of their account.