The marketing department you never had to hire.

Your department.
Without building one.

A specialist agency executes its one thing well and hands it back. Somebody still has to hold the strategy together, make sure the ads point at the page the content team is building, chase the vendors who have never spoken to each other, and notice when one of them is optimising a number that does not matter. In most companies that somebody is the owner. This is the layer we take off your desk.