What is an advertising agency?
An advertising agency is a company brands hire to make and place their advertising. At its simplest it does three things: works out what a brand should say, makes the ads that say it, and buys the space where people will see them. The classic agency of the twentieth century did all three under one roof, with account people facing the client, planners writing the strategy, creatives making the work and a media department buying television, print and billboards.
That model has fragmented. Media buying mostly lives in specialist shops now, production often happens in studios like ours, and the word agency covers everything from a two-person creative team to a global network with forty thousand staff. What has not changed is the job: turn a business problem into a message, and turn that message into something people notice. The agencies worth hiring are the ones that still take that second half seriously, because a sharp strategy delivered as a dull film is a strategy nobody saw.
Why it matters
Why an advertising agency matters
A brand can talk to the world directly now, which is exactly why a good agency matters more, not less. Every brand has a feed, a channel and a budget; very few have a point of view that survives contact with an audience. An agency brings distance. It sees the brand the way a customer does, not the way the org chart does, and it has watched enough campaigns succeed and fail to know which instincts to trust.
The other thing an agency brings is a team built for making. Strategy, writing, design, film and media are separate crafts, and keeping all of them senior in-house is expensive for a brand that only needs them in bursts. An agency keeps the bench warm all year and points it at your problem when you call.
In practice
How an advertising agency works in practice
- 01
Work starts with a brief, ideally a short one that names the business problem, the audience and what success looks like. The agency answers with a strategy and a creative idea, usually presented together, then budgets and schedules the production once the idea is approved. Production is where the idea becomes film, photography, copy and design, and it is where most of the money goes. Media follows: the finished work is cut to every format the plan needs, then placed, measured and optimized.
- 02
Agencies charge in a few ways. Retainers cover an ongoing relationship with a monthly fee; project fees cover a single campaign; some agencies still take a commission on media. Whichever model applies, the scope of work is the document that keeps everyone honest, and the producer is the person who keeps the scope and the calendar in the same place.
At RIOT
Advertising agency work at RIOT
RIOT is a creative agency and production studio, which means the advertising we make is made by the people who thought of it. The U.S. Chamber of Commerce brand spot "For the Pursuit", the Bogg Bags CTV spot "Real Life, Worry Free" and the Homebase Meta ad engine we ran from February to April 2025 all came out of one room: strategy, creative, shoot and edit under the same roof, with no hand-off between the idea and the film.
Watch out
What people get wrong about advertising agencies
Hiring one for the logo on the door. A network agency's reputation was built by people who may have moved on years ago, and the team you actually get is the team that happens to be free. Ask who will be in the room, and in the edit, before you sign.
The other mistake is briefing an agency on the ad instead of the problem. "We need a thirty-second spot" is an answer, not a brief. Tell an agency what has to change in the business and let it argue for the format, because the right answer is sometimes a film, sometimes a product drop, and sometimes a thing nobody has a name for yet.
