Connected TV has stopped being the shiny new line item and become one of the biggest chunks of the media plan. A new explainer from PPC Land lays out how the channel actually works under the hood, and the picture is equal parts opportunity and warning label.
What CTV actually means
CTV is an internet-connected television: a smart TV, a streaming stick like Roku, Amazon Fire TV or Apple TV, or a games console running streaming apps. In advertising, the term also covers the inventory itself, video bought programmatically against those devices using the same real-time bidding plumbing that already ran display and mobile.
Worth keeping the taxonomy straight, because it shows up in briefs and it matters:
- OTT is the delivery method, any video over the open internet. All CTV is OTT; not all OTT is CTV, since OTT also hits phones and browsers.
- FAST is a content model, free ad-supported linear-style channels, not a hardware category.
- vMVPD is a subscription service carrying licensed cable networks over the internet, an app running on a CTV device.
- SSAI is server-side ad insertion, a delivery technique used inside CTV.
- Addressable TV is household-level targeting through set-top box or cable infrastructure, a different technical lineage entirely.
How the transaction runs
An app or TV operating system requests an ad for a break, a pause screen or a home screen tile. The request usually follows OpenRTB, the IAB Tech Lab bidding protocol, and identifies the hardware. Under the AdCOM specification, connected TV sits at devicetype 3, separate from mobile, desktop and set-top box. DSPs evaluate and bid within milliseconds.
Then delivery splits two ways. Client-side insertion stitches ad and content together at playback in the app. SSAI does the stitching earlier on the publisher’s server, which looks smoother on screen but strips out the client-side beacons verification vendors depend on. That single trade-off between playback quality and measurement transparency drives most of the industry’s current arguments.
Ad breaks are grouped into pods. OpenRTB 2.6, developed with Index Exchange and open for comment through 7 February 2022, added structured, dynamic and hybrid pod types so publishers can expose slot positions and per-second floor pricing in one request.
The money is real, and it is being taken from linear
EMARKETER’s December 2025 projections put US CTV spend at $20bn in 2022 (23% of total TV), $38bn in 2026 (43%) and $47.6bn by 2028 (53%). Traditional TV drops from $66.6bn to $43.1bn across the same window while combined spend stays roughly flat. Translation for planners: this is redistribution, not new money.
Audience backs it up. Nielsen’s July 2025 Gauge report showed streaming passed broadcast and cable combined for the first time, 44.8% versus 44.2% in May 2025. The VAB’s April 2026 report counted 210 million US ad-supported viewers. Comscore’s January 2026 State of Programmatic put CTV at 26% of average media spend, up three points year over year.
Where it breaks
Measurement has not kept up with the budget. IAB Spain’s May 2026 study found 44% of professionals lacked confidence in CTV measurement. DoubleVerify’s 2026 Global Insights report, published 7 May 2026, recorded a 140% rise in CTV fraud schemes in Q1 versus 2025, plus a tenfold increase in fraudulent apps. HUMAN Security’s NewsJunkie takedown exposed spoofed device, app and IP data peaking at two billion bid requests a day, including inside direct deals.
Then the unglamorous one: DoubleVerify data indicates more than one in three CTV impressions land on a powered-off television, detectable via HDMI-CEC signalling that almost nobody implements. A Jamloop survey of 120 marketers (9 July 2026) found only 33% fully trusted platform-reported CTV performance, while half had increased CTV budgets anyway.
What to do on Monday
Treat CTV like paid social in 2015: real reach, immature reporting. Practical moves:
- Stop celebrating 98% completion rates. As programmatic director Austin Lake argued in June 2026, those rates are structurally guaranteed because CTV ads mostly cannot be skipped.
- Demand app-level and, where possible, show-level transparency. Gracenote research found 86% of planners would shift more linear budget if show-level targeting and reporting existed consistently.
- Test curated marketplaces such as Walmart Connect’s Connect Select (launched 27 April 2026) against open bidding, and compare outcomes, not impressions.
- Build TV-native creative. Smartly and EMARKETER found 72% of marketers reuse or barely tweak social creative for CTV.
Supply is consolidating fast too, with Fox’s reported $22bn Roku deal and Samsung opening its home screens to programmatic via The Trade Desk and DV360. Fewer, bigger gatekeepers make your own measurement discipline the only real leverage you have.
Source: PPC Land
