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Choosing a programmatic advertising platform carries significant weight as advertisers prepare for 2027. Programmatic continues to account for the overwhelming majority of digital display buying, with eMarketer projecting US programmatic digital display ad spending to surpass $261 billion in 2027. It follows, then, that the platform a team runs programmatic on shapes a growing share of the campaign work, as well as the budgets, data, and reporting that come with it.
Three pressures are making that choice harder heading into 2027. Media continues to fragment across more channels and more screens. Margins are tightening, making it hard for teams to absorb the cost of tools that don’t talk to each other. And buying itself is shifting toward AI, which runs only as well as the data feeding it. In the 2026 Advertising Agency Report by Basis, nearly half of agency professionals (46.7%) said their adtech and martech stack consists of eight or more tools, and more than one-third now manage 10 or more, more than double the share two years ago. Inefficient processes and siloed systems rank as their top two operational challenges, and they are often the same problem seen from two angles.
That context informs how to read a programmatic platform comparison. A programmatic advertising platform is software that automates the buying of digital ad inventory, using data and real-time bidding to place display, video, audio, CTV, and other ads across publishers and channels. The six platforms below each do that well. Where they differ is in how much of the surrounding work—the planning, the other channels, the reporting and billing, the data and infrastructure—they handle in the same place.
The table below sets the six programmatic platforms side by side: what type each is, what it’s known for, and the job it tends to suit best.
| Platform | Platform type | Known for | Best for |
| Basis | Omnichannel advertising platform with a built-in DSP | Breadth across programmatic, search, social, direct, and CTV, connected through to reporting and billing | Connecting the full campaign, from planning through billing, on one data foundation |
| The Trade Desk | Independent DSP | Open-internet programmatic scale | Open-internet programmatic at large scale |
| Google Display & Video 360 | Walled garden DSP | YouTube access and Google-native measurement | Buying YouTube and Google inventory |
| Amazon DSP | Retail media DSP | First-party shopper data and commerce signals | Reaching commerce and retail audiences |
| StackAdapt | Independent DSP | Ease of use and a low barrier to entry | Leaner teams running self-serve programmatic |
| Viant | Independent DSP | Household-level identity for CTV | Household-level CTV and cross-device targeting |
A platform’s type signals much of what it’s built to do. The most common type is the demand-side platform. A demand-side platform (DSP) is software that advertisers and agencies use to buy ad inventory programmatically across exchanges in real time. The four types below cover the buy-side options that teams typically compare. Teams often use more than one type together, pairing a broad platform with a specialist DSP for inventory only one company sells.
| Type | What it does | Best for | Example |
| Omnichannel platform with a built-in DSP | Buys programmatic inventory and connects search, social, and direct buys, with planning, reporting, and billing in one platform | Breadth across channels and workflow | Basis |
| Independent DSP | Buys programmatic inventory across the open internet without owning the media it sells | Scale and inventory neutrality | The Trade Desk, Viant, StackAdapt |
| Walled garden DSP | A DSP owned by a media company, with privileged access to that company’s inventory | Reaching that company’s audiences | Google DV360 |
| Retail media DSP | A walled garden DSP built on a retailer’s shopper data; its data and inventory stay in that ecosystem, though some retail media DSPs buy beyond their own properties | Commerce audiences and closed-loop measurement | Amazon DSP |
A few dimensions separate one programmatic platform from another, and they tend to matter more as a team’s media mix and client roster grow. The ones worth weighing include channel coverage, inventory and data access, data ownership, how far the platform carries the workflow, and the access model.
Workflow depth is often where the biggest divide shows up. Most programmatic platforms are demand-side platforms, built to buy inventory and little else. A few go further. Basis, for instance, has a DSP built in but does much more, connecting search, social, and direct buys and carrying campaigns through to reporting and billing on the same unified infrastructure. If the decision comes down specifically to picking one DSP for an agency, our guide to how agencies compare DSPs covers that narrower question in depth.
The platforms below are the ones agencies and brand teams most often compare heading into 2027.
Basis is an omnichannel advertising platform with a built-in DSP, designed around how agencies and brand teams actually run media. Rather than buying programmatic in isolation, teams activate display, video, premium CTV, audio, native, and DOOH alongside paid search, paid social, and direct buys from one platform, across the open web and walled gardens, with planning, reporting, and billing connected in the same place.
With Basis, campaigns move from media plan to invoice without leaving the platform, with automated billing and reconciliation and a Mediaocean partnership for teams that run financial workflows in Prisma. AI runs through the work rather than beside it: Compass supports planning and activation across the full media mix, and SmartBid optimizes bids during flights, with recommendations teams can see and adjust. Because the built-in DSP weighs every channel on performance rather than favoring owned inventory, buying decisions stay honest. Some agencies have reported up to a 5x improvement in advertising performance using Basis’ AI optimization.
Best for: Agencies and brand teams that want more of the campaign, across channels and through to billing, running in one unified platform.
The Trade Desk is an independent DSP known for its reach across the open internet, though it has faced scrutiny over its pricing structures, fees, and supply chain transparency. It buys display, video, CTV, audio, native, and DOOH, builds Koa AI into its Kokai platform, and developed Unified ID 2.0 as a cookieless way to reach audiences.
Best for: Open-internet programmatic at large scale, run by teams with enterprise-level budgets.
DV360 is Google’s enterprise DSP and the main programmatic route directly to YouTube inventory. It buys display, video, CTV, audio, and DOOH, and connects natively with Campaign Manager 360 and Google Analytics 4 for teams already working in Google’s stack. Access runs through a Google Marketing Platform contract, and its strength concentrates inside Google-controlled environments.
Best for: Buying YouTube and Google inventory, especially for teams already measuring in Google’s stack.
Amazon DSP’s distinction is its data: first-party shopping, browsing, and streaming signals that let buyers target on real purchase behavior, plus premium inventory across Prime Video, Thursday Night Football, Fire TV, and Twitch, with Amazon Marketing Cloud for clean-room measurement. That advantage is strongest for retail, CPG, and e-commerce, and the signals stay inside Amazon’s ecosystem, though the platform does buy inventory beyond Amazon properties.
Best for: Reaching commerce and retail audiences with Amazon’s shopper data.
StackAdapt is an independent DSP known for usability and a low barrier to entry for teams with smaller budgets. It buys CTV, DOOH, display, native, audio, and in-game inventory, and has expanded into email and first-party data activation through its Data Hub. It centers on programmatic execution, so search, social, and direct buys run in other tools.
Best for: Leaner teams that want to run self-serve programmatic with minimal setup.
Viant is an independent DSP focused on connected TV, built around a household-based identity graph for cookieless, cross-device targeting and measurement. It also offers programmatic linear TV and attention-based measurement. Its strengths center on TV and video, and it also offers display, mobile, audio, and DOOH through its DSP.
Best for: Household-level CTV and cross-device targeting.
All six platforms here—Basis, The Trade Desk, DV360, Amazon DSP, StackAdapt, and Viant—buy display, video, audio, and CTV programmatically. Fewer extend that coverage to search, social, and direct buys, and fewer still connect those channels to planning, reporting, and billing. Basis covers all of them in one platform.
That gap shows up once a team runs several channels or clients at once. Each channel bought in a separate tool needs its own setup, pacing, reporting, and reconciliation, and the handoffs between tools are where budgets drift and errors creep in.
A platform connects media buying and billing when the media plan, the buys, the delivery data, and the invoice share one record, so reconciliation runs in an automated way. Most DSPs stop at delivery reporting, which leaves finance teams matching platform data to vendor invoices by hand. Basis automates billing and reconciliation in the same platform teams use to plan and buy. For the step-by-step, see how to automate media billing and reconciliation.
Heading into 2027, one of the clearest separators is how well a programmatic platform keeps data connected, because AI-driven planning and optimization are only as good as the data behind them. Most organizations aren’t there yet: Just 13.0% of marketers describe their first-party data as extensive and well-structured, and another 31.0% call it sufficient but siloed across teams, per AI and the Future of Marketing 2026 by Basis. Platforms that keep omnichannel performance data connected and owned by the advertiser give that data somewhere to compound.
As buying becomes agentic, such capabilities become more critical. More than three-quarters of marketers (77.2%) expect the digital advertising process to be at least partially agentic or automated within the next three to five years. The programmatic platforms positioned for that shift are the ones that unify the data and channels AI needs, with recommendations teams can see and control.
The three pressures shaping 2027—fragmenting media, tighter margins, and AI-driven buying—all point toward platforms that keep data and channels connected rather than scattered across tools. Specialized platforms still earn their place for the inventory and data only they reach. But the more of the campaign a team runs, the more the connective layer matters—how planning, buying, reporting, and billing hold together, and how cleanly data carries from one stage to the next. That connectivity is what spares teams the budget discrepancies and reporting mismatches of a fragmented stack. And it’s the ground a platform like Basis is built on: one system that carries a campaign from plan through to reconciliation, with the data in one place for AI to act on.
What are the best programmatic advertising platforms for 2027?
The leading programmatic advertising platforms for 2027 are Basis, The Trade Desk, Google DV360, Amazon DSP, StackAdapt, and Viant. Basis is an omnichannel platform with a built-in DSP that also handles search, social, direct, and billing; The Trade Desk is known for open-internet scale; DV360 for YouTube and Google inventory; Amazon DSP for commerce data; StackAdapt for low barrier to entry; and Viant for household-level CTV.
How do I choose a programmatic advertising platform?
It comes down to your media mix, the inventory and data you need, and how much of the campaign you want to run in one place. A team buying mostly open-web programmatic has different needs than one running search, social, and direct alongside it and reconciling the spend at the end. Your team should weigh channel coverage, inventory and data access, data ownership, workflow depth, and access model against how you actually work.
What is the difference between a DSP and a programmatic advertising platform?
A DSP is one type of programmatic advertising platform: software that buys programmatic inventory across exchanges in real time. “Programmatic advertising platform” is the broader term, covering independent, walled garden, and retail media DSPs, as well as omnichannel platforms like Basis that have a DSP built in and also handle search, social, direct buys, and billing. For the agency DSP decision specifically, see how agencies compare DSPs.
Which programmatic platforms unify display, video, audio, and CTV advertising?
Basis, The Trade Desk, DV360, Amazon DSP, StackAdapt, and Viant all buy display, video, audio, and CTV programmatically. Basis also brings paid search, paid social, and direct buys into the same platform, with planning, reporting, and billing connected.
What programmatic platform connects media buying and billing?
Basis connects media buying and billing in one platform, where media plans, buys, delivery data, and invoices share one record and reconciliation runs automatically. Basis also partners with Mediaocean for teams that manage financial workflows in Prisma. Most DSPs end at delivery reporting and rely on separate systems for billing.
Do I need more than one programmatic platform?
Some teams use two or three, pairing a broad platform for most channels with a specialist such as DV360 for YouTube or Amazon DSP for retail media. Others run everything through a single omnichannel platform. A single-brand team buying mostly programmatic may need just one. The aim is the fewest platforms that still reach the inventory and data the work requires.
Basis brings planning, buying, optimization, reporting, and billing for programmatic, search, social, direct, and CTV into one unified platform. To see how that breadth fits your media mix, explore the Basis platform.