What Is an Agency Trading Desk (ATD) and How Does It Work?
With the rise of self-service programmatic ad-buying platforms, brands have become increasingly independent of agencies and their managed services. Today, most online — and some offline — media purchases can be made in-house, at a lower cost and with greater transparency and control over the purchased media.
Does that make agency trading desks completely irrelevant by today's standards? Here's a clear-eyed look at what they are, how they work, and where they stand in the current landscape.
What Is an Agency Trading Desk?
A trading desk is either a piece of technology or a set of services provided by a media agency. Those services cover the planning, buying, managing and optimizing of programmatic advertising campaigns.
From an advertiser's perspective, the original appeal of an agency trading desk (ATD) was buying media at a lower price than managing campaigns in-house. ATDs were able to offer competitive pricing because they represented many clients simultaneously and could negotiate better deals with premium publishers. That advantage has eroded considerably over the years.
Today, many of the key advantages that ATDs once held are challenged by leading online advertising companies like Google. The traditional agency business model is under pressure, but it has also evolved — expanding into a fuller suite of services that incorporates analytics tools and additional products well beyond the original ATD definition.
ATD vs. DSP
On the surface, an ATD's capabilities can sound similar to those of a self-serve demand-side platform (DSP). The key distinction is that agency trading desks layer human labour on top of the technology — and that labour is a core part of what clients are paying for.
ATDs hire software developers, account managers and data analysts who work on behalf of the agency's advertising clients. Trading desks can operate one or more DSPs simultaneously. Advertisers using an ATD typically do not get direct access to the available media inventory.
A DSP, by contrast, is a piece of advertising technology used by advertisers and agencies to purchase media from publishers via supply-side platforms (SSPs) and ad exchanges. DSPs buy impressions from SSPs and ad exchanges via real-time bidding (RTB), either on the open market or through private marketplace (PMP) deals.
In short: ATDs sit between the advertiser and the DSP, adding a service layer — and additional fees — on top of the underlying technology.
The Evolution of Agency Trading Desks
Brands have grown increasingly demanding about transparency around fees, commissions and the actual cost of media. Advertisers want the ATD to act as a genuine agent working on their behalf, not simply a middleman extracting margin at each step.
Only some agencies are transparent about their markup on programmatic media, and this opacity has pushed a growing number of brands to bring ad planning and buying in-house.
To adapt, ATDs have become considerably more sophisticated, incorporating functionalities from key AdTech platforms. The technology stack at a modern ATD is typically built on proprietary advertising technology, though it may also rely on licensed platforms — DSPs, ad servers, data management platforms (DMPs), and others. This combination allows trading desks to offer clients meaningful technology leverage, improved campaign performance, and greater value from digital ad spend.
At the same time, client dissatisfaction over transparency has driven a separate trend: decentralization of trading-desk services. To lower service costs and offer higher transparency, some major holding companies have decentralized their trading-desk departments by moving programmatic staff into individual agencies and departments. An article on Digiday details examples of trading desks that fully or partly merged with other agencies within the same holding group to improve transparency and consolidate technology.
How Does an Agency Trading Desk Work?
An ATD sits between the advertiser and the DSP. Unlike DSPs, which charge fees directly to brands and agencies buying inventory from SSPs and ad exchanges, ATDs charge their own fees on top of DSP costs.
Because a large part of an ATD's offering is technology, it operates similarly to other AdTech platforms: connecting with supply and demand sources — SSPs, ad exchanges, DSPs and ad networks — to purchase media, and with data providers (DMPs) to target specific audiences.
Some ATDs purchase media in advance, add a markup, and sell it to clients at a higher price. Others buy media via real-time bidding and take a percentage of the client's budget as their fee.
Agency trading desks provide a range of services, some of which are not directly tied to media buying:
Planning: ATDs work closely with the agency to plan and configure media campaigns, including selecting the right audience, placement, ad format (e.g., display or video), flight dates, budget and pricing model (e.g., CPM or CPC).
Execution and optimization: They launch campaigns and make ongoing adjustments. Some optimizations are performed manually by human buyers; others are automated by algorithms.
Reporting and analytics: Many ATDs offer in-depth reports and analysis covering both campaign performance and the audiences who viewed or clicked on the ads.
What Benefits Do ATDs Offer Advertisers?
Domain expertise: Media buyers at ATDs are typically more experienced in programmatic ad buying than in-house teams at brands, particularly those just beginning to bring programmatic capabilities internal.
Lower cost through scale: By serving a large number of clients, ATDs can spread the cost of software, training and operations across a broader base, reducing per-client overhead.
Trading desks run multiple campaigns for large clients across various market segments. They leverage their own technology — DMPs and ad servers that aggregate audience data, analyze it, and surface insights for improving future campaign performance.
Access to specialized campaign data: This includes historical bidding data, optimization algorithms, bidding models and response prediction for campaigns.
Outsourced campaign management: ATDs handle marketing campaigns end-to-end, reducing the operational burden on brand-side teams.
Why Are Brands Moving Away from ATDs?
The role of ATDs has diminished as advertisers have gained the ability to leverage programmatic technology on their own — for example, by integrating self-serve DSPs or white-label DSPs. The in-house route is typically cheaper and more transparent: there are no hidden margins on top of the underlying media cost. Trading desks typically charge between 10–20% of the client's ad revenue, on top of everything else.
A 2014 ANA and Forrester survey found that 42% of marketers reported concerns about agency transparency. Top concerns included media-buying effectiveness, performance metrics, viewability, ad serving and fees.
In many cases, clients were paying heavily for services that delivered limited incremental benefit. Some of the larger ATDs were genuine technology enterprises, but many simply outsourced the technology layer and paid for third-party DSPs. ATDs have justified their margins partly on the basis of risk — they sometimes earn less while billing the brand a fixed rate as set out in the client agreement — but that argument has grown less convincing as self-serve alternatives have matured.
ATDs do not disclose the actual cost of media to clients. The trade-off is that the ATD assumes the risk of earning less or more than anticipated while delivering the audience reach or KPIs contractually obligated.
Agency trading desks have historically been secretive about their internal workings, and in the early days they benefited from the fact that many advertisers had little knowledge of programmatic ad-buying processes. ATDs also pool their client data together, gaining scale advantages while offering clients little visibility or control in return. As a result, some advertisers have found themselves with limited oversight over:
- Where their ads are running
- Why they are displayed in those placements
- Who is seeing the ads
- How frequently audiences are exposed to them
- What intermediaries are involved in the supply chain
- What is being paid to those intermediaries
- What the ads are actually achieving against KPIs
Leading Agency Trading Desk Operations Today
ATDs have gone through major consolidation and restructuring over the last several years. Many leading advertising holding companies now run their own trading desks:
- Xaxis, [m]Platform (operated by WPP)
- Accuen (operated by Omnicom)
- VivaKi (Publicis)
- Cadreon, Magna Global (operated by IPG)
- Affiperf (operated by Havas)
- Dentsu Audience Network, Amnet (operated by Dentsu/Carat)
- Varick (operated by MDC)
This consolidation does not necessarily signal the end of ATDs, but it does point to a need for tighter integration between programmatic processes and broader brand strategy.
Where Agency Trading Desks Stand Today
Agency trading desks, like many other players in the online advertising ecosystem, are navigating a difficult set of challenges: brands are taking programmatic in-house, leaving partners that fail to provide adequate transparency and data ownership, and facing relentless competitive pressure from the walled gardens of Google and Facebook.
Despite the success many ATDs have achieved, they will need to continue evolving to meet the demands of today's advertisers. For brands still assessing their options, the central question is whether the expertise and scale an ATD brings justifies the added cost and reduced visibility — and in a market where self-serve technology is increasingly accessible, that calculation is shifting.