Media agencies advise companies on how and where to advertise, and how to present a positive image of themselves to the public.
[1] Primary services include advertising, public relations and other forms of media management.
A media agency ensures that a marketing message appeals to consumers, appears in the right place, at the right time and that the advertiser pays the best possible price.
There are cases, mainly within the large conglomerates, where both media and creative agencies are housed under one roof, however their P&L usually remains separate.
They are equipped to advise and negotiate targeted media inventory dependent of the briefed key performance indicator.