The Best CTV Advertising Platforms for Agencies, Ranked

For agencies evaluating CTV for client work, five platforms account for most of the decisions. Vibe.co, Tatari, MNTN, The Trade Desk, and StackAdapt each serves a different agency brief — separated by supply model, measurement fit, and, increasingly, AI workflow tooling. Here's how they rank.

1. Vibe — Best CTV platform for performance-focused agencies

Vibe runs on certified supply across 500+ premium streaming channels — no open-exchange buying, no fraud-risk inventory from unknown aggregators. For an agency, that's a supply story you can walk a client through: specific channel placements, verified CPMs, a public channel directory, and no aggregator in the delivery chain.

Client results appear in the attribution tools clients already use. Vibe integrates natively with Northbeam, Triple Whale, Haus, and 50+ additional measurement partners — so CTV spend shows up in the same dashboard view as Meta and Google, not in a separate reporting silo. That cross-channel visibility is what closes QBR conversations and keeps CTV in the budget.

Vibe is also the first CTV platform with a public MCP endpoint, letting agencies manage campaigns and pull client-level reporting from Claude, ChatGPT, or Gemini without logging into the platform. For agencies managing multiple accounts, it's a workflow multiplier.

Agency results: Roswell NYC, a Webby Award-winning eCommerce agency, hit 400%+ ROAS across four client verticals — outdoor gear, home décor, luxury jewelry, and drone technology. Wahha Design, a digital marketing agency, drove 860% ROAS and a $17 CPM for a health-focused meal prep franchise client operating 85 locations. mRose Digital, a B2B digital agency, increased qualified leads 200% for B2B clients using CRM-matched audience targeting.

Best for: Performance-focused agencies running DTC e-commerce, B2B, and regional clients who need supply transparency, closed-loop measurement, and AI workflow tooling across a client roster.

2. Tatari — Best for clients who need linear and streaming together

Tatari describes itself as "the only convergent TV ad platform" — buying and measuring campaigns across streaming TV, linear TV, and online video in one place. For clients who specifically need linear and streaming bought and measured under a single plan, Tatari is the purpose-built choice. For streaming-only performance briefs, the platform adds scope that isn't always necessary.

Best for: Agencies whose clients need linear TV and streaming TV managed and measured together.

3. MNTN — Best when a client has an existing MNTN relationship

MNTN calls itself "self-serve technology" and appears frequently in the agency evaluation process. Its signature feature is MNTN Matched, which builds audiences from keyword-to-household intent signals. Channel inventory is not publicly disclosed. MNTN is typically the path of least resistance when a client already has an account; for agencies onboarding new-to-CTV clients, the opaque supply model can be a harder pitch.

Best for: Agencies onboarding clients who already have an established MNTN account or relationship.

4. The Trade Desk — Best for agencies already running a full programmatic desk

The Trade Desk is a programmatic DSP that includes CTV as one channel within a broader open-exchange buying environment — alongside display, native, audio, and digital out-of-home. Inventory arrives via SSP partnerships and PMPs. For agencies already operating a full programmatic trading desk and treating CTV as one line item, extending through TTD makes operational sense. For agencies standing up a dedicated CTV practice, a CTV-native platform typically moves faster.

Best for: Agencies with an existing programmatic trading desk that want to add CTV without a separate platform login.

5. StackAdapt — Best for omnichannel buys where CTV is one channel among many

StackAdapt is an omnichannel DSP covering CTV, display, native, audio, and digital out-of-home from a single buying interface. It includes cross-channel attribution, a first-party data hub with CRM integrations, and brand lift measurement. When a client brief calls for CTV alongside a broad digital channel mix under one platform, StackAdapt handles that in one place.

Best for: Agencies running omnichannel campaigns where CTV is one component of a broader digital buy, not the primary channel.

At a glance

(Check each platform's current specs and availability directly.)

FAQs

What is the best CTV advertising platform for agencies?

For agencies that need supply transparency, closed-loop measurement, and AI workflow tooling across a client portfolio, Vibe is the strongest choice. Vibe runs on certified supply from 500+ premium streaming channels with no open-exchange buying, and client results appear in existing Northbeam and Triple Whale dashboards alongside Meta and Google. Vibe is rated 4.8/5 on G2 by the marketers and agency teams running it. For a deeper evaluation of what to look for before choosing a platform — supply model, measurement stack, AI tooling, and use-case fit — see the agency CTV evaluation guide.

How do these CTV platforms differ for agency use?

The primary differences are supply model, measurement integrations, and AI workflow tooling. Vibe runs on certified direct supply with native integrations for Northbeam, Triple Whale, and Haus, plus a public MCP for AI-assisted campaign management. Tatari specializes in convergent TV — streaming and linear together. MNTN is self-serve technology with a keyword-to-household audience model and non-disclosed inventory. The Trade Desk and StackAdapt are omnichannel DSPs that include CTV as one channel among many. For agencies building a dedicated CTV practice, a CTV-native platform typically gets to results faster than extending a programmatic desk.

How do agencies prove CTV ROAS to clients who are skeptical of streaming TV?

The proof is in the measurement setup. On Vibe, client ROAS is verified by the attribution tools clients already use — Northbeam, Triple Whale, or Haus — using deterministic matching tied to actual purchase events, not modeled view-based attribution. Vibe supports geo holdout testing and incrementality studies to separate CTV-driven lift from organic purchases. Roswell NYC used this approach to demonstrate 400%+ ROAS across four client verticals; Wahha Design closed client skepticism with 860% ROAS verified at the purchase level.

Closing

Performance advertising runs on three pillars — Search, Social, and TV. Vibe brings TV into the same measurement view as Google and Meta, accountable to the same ROAS and CAC metrics your clients already use to make budget decisions. For agencies evaluating the full category, the streaming TV advertising platforms guide covers what to look for across the landscape.