Media Terminology · 2026

CTV vs. OTT - the distinction that actually matters for media buyers.

CTV and OTT are used interchangeably by vendors, inconsistently by platforms, and often incorrectly in media plans. This creates budget allocation errors, measurement confusion, and vendor conversations that waste everyone's time. Here's the actual distinction and why it matters.

The short version

OTT means video delivered via internet (not cable/satellite) - it includes TV screens, phones, tablets, and computers. CTV means video delivered to a television screen connected to the internet - it's a subset of OTT. When a vendor says 'OTT campaign,' ask what percentage is CTV (TV screen). CPMs, completion rates, and brand recall differ significantly between TV-screen and mobile/desktop delivery.

The definitions, precisely

OTT (Over-the-Top): Any video content delivered over the internet to a viewer - bypassing traditional cable, satellite, or broadcast distribution. "Over the top" of the traditional distribution pipe.

OTT encompasses:

Smart TVs streaming Hulu
A phone watching YouTube
A laptop playing Netflix
A Roku stick connected to a hotel TV

CTV (Connected TV): A television set connected to the internet, either as a smart TV or via a streaming device (Roku, Fire TV, Apple TV, Chromecast, gaming console).

CTV is a subset of OTT. Every CTV impression is an OTT impression. Not every OTT impression is a CTV impression.

Visual: OTT is the full circle. CTV is the TV-screen portion of that circle.

Why the distinction matters for media buyers

The practical difference in a media plan:

CPMs: CTV commands $15–$35 CPM. Mobile OTT is $8–$20. Desktop OTT is $5–$15. A "blended OTT" buy at a low CPM is often buying mostly mobile and desktop inventory.
Completion rates: CTV non-skippable ads complete at 85–97%. Mobile pre-roll completes at 60–75%. The environment drives the difference.
Brand recall: TV-screen viewing produces 2–3× higher brand recall than equivalent mobile/desktop viewing. The full-screen, shared-household, lean-back context drives this.
Measurement: CTV measurement is household-level. Mobile/desktop is individual-level. These don't aggregate cleanly - deduplication between device types requires identity resolution.

When a DSP or vendor pitches you an "OTT package," ask: what is the device breakdown? What percentage of impressions are CTV vs. mobile/desktop? The answer determines whether you're buying TV adjacency or mobile video adjacency at a CTV-seeming price.

Platform classification: CTV vs OTT

Roku: CTV-only. Roku is a TV device. All Roku advertising is CTV.
Hulu: Primarily CTV, but Hulu is also accessed on mobile and desktop. Hulu reports device breakdown - most inventory is CTV (TV screen).
YouTube: OTT across all devices. YouTube on a TV (YouTube CTV) is a separate targeting option. Specify CTV delivery if TV screen matters.
Amazon Fire TV / Prime Video: Available on TV (CTV), mobile (OTT), and desktop (OTT). Fire TV inventory is CTV; Prime Video mobile is OTT.
Netflix: Primarily watched on TV (CTV), mobile access is common. Ad delivery is weighted toward TV screen.
Tubi / Pluto TV (FAST services): Available on all devices. CTV delivery is dominant in audience share but programmatic buys often serve broadly across devices.

How to specify CTV in a media plan

When building a CTV-specific plan:

In your DSP: Most DSPs allow device-type targeting. Filter to Connected TV / OTT-TV device type. Exclude mobile and desktop OTT if TV-screen delivery is the requirement.
In RFPs and vendor briefs: Specify "CTV only - TV screen delivery required, no mobile or desktop OTT" as a hard requirement if that's the intent.
In reporting: Request device-type breakdown on all OTT campaigns. Don't accept "video completion rate" without knowing which devices drove it.
When buying programmatically: CTV supply-path optimization (SPO) - buying directly from sellers like Roku, Magnite CTV, SpotX - reduces desktop/mobile bleed versus open exchange.

See the CTV advertising guide and the OTT guide for buying detail on each approach.

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