How should CTV advertising be measured? IAB Europe's new framework

In brief: Connected TV advertising should not be judged by views and completion rate alone. Reliable measurement first confirms that an ad was validly delivered while the television was on, then evaluates reach and frequency, and only then interprets outcomes such as sales, ROAS, brand lift and incrementality.

On 1 October 2026, IAB Europe released its final Connected TV Measurement Framework and Transparency Principles. The framework connects metrics used across broadcasters, streaming services and digital-first video platforms through three dependent layers. It also sets five expectations for transparent reporting. It is not a mandatory Azerbaijani standard, but it offers a useful buying and reporting reference for brands combining television and digital video.

What is CTV, and how is it different from linear television?

CTV is a digital video advertising environment delivered on an internet-connected television screen. It can include smart-TV apps, broadcaster video-on-demand, streaming services and other digital-first video experiences. Linear TV planning generally uses channel, programme, daypart, ratings, reach, frequency and GRP. CTV adds device-level delivery, completion, viewability, audience segmentation and digital outcome signals.

The distinction does not mean one channel must replace the other. Linear TV can provide broad reach, while CTV can add selected audiences and more flexible optimisation. Combining TV advertising and digital video around one objective and frequency plan can extend reach without repeatedly overexposing the same viewers.

IAB Europe's three-layer measurement logic

The framework's most important idea is that metrics depend on one another. If the underlying ad impression is not clean and trustworthy, reach, conversion and ROAS built on that impression become less reliable. Reports should therefore be interpreted in the following order.

1. Foundational delivery metrics

The first layer asks whether advertising was delivered correctly. It covers ad impressions, general and sophisticated invalid-traffic filtration, TV-off detection and viewability. An app may generate an ad call even when the television screen is off. Counting that event as a human advertising exposure can inflate every metric that follows.

2. Exposure and audience

The second layer explains how advertising was watched and who it reached. View-through rate, video completion rate, device identifiers, reach, frequency and content-level information belong here. The important question is not only whether a video completed, but whether reported reach represents a device, a household or a modelled person.

3. Performance and business outcomes

The third layer includes conversions, ROAS, incrementality, brand uplift, ad recall and attention. These outcomes become meaningful only when the delivery and audience layers are credible. Claiming that CTV increased sales requires separating incremental impact from sales that would have occurred without the campaign.

What do the five transparency principles give media buyers?

IAB Europe identifies five expectations: unified standards-aligned definitions, full disclosure of measurement limitations, support for client-initiated data collection, visibility into device power state, and granular actionable reporting.

In practical terms, agencies and advertisers should request the method behind the dashboard. Is person-level reach observed or modelled? What co-viewing assumption is applied? How is invalid traffic filtered? In which apps, content categories and devices did the campaign run? What conversion window and attribution rule are used? Without these answers, two platforms' similarly named metrics may not be directly comparable.

What does this mean for advertisers in Azerbaijan?

CTV inventory and unified measurement infrastructure in Azerbaijan may not match those of Europe's largest markets. The international framework should not be copied mechanically. It can, however, establish a minimum information standard for buying briefs and reports. Even when a campaign combines linear TV, YouTube, OTT apps and social video, each channel's role should be agreed in advance.

Linear television may create broad reach and fast awareness; CTV can support more selective audiences and frequency control; search and social can convert interest into visits and enquiries. When media buying connects these roles, the question changes from “which channel is better?” to “where does each channel add value along the customer journey?”

Seven actions before a campaign begins

1. Write the business objective: decide whether awareness, incremental reach, site traffic, enquiries or sales is the primary outcome.

2. Clarify inventory: ask what transparency is available by publisher, app, content category, device and geography.

3. Agree on the reach definition: document whether reach is device-, household- or person-level and disclose modelling and co-viewing assumptions.

4. Check TV-off and fraud filtration: understand how powered-off screens, bots and invalid traffic are removed from impressions.

5. Set frequency limits: even where cross-platform deduplication is incomplete, use frequency caps within each addressable platform.

6. Prepare outcome measurement first: plan UTM tagging, landing pages, brand-search tracking, promo codes, phone attribution and CRM fields before launch.

7. Choose a test design: where practical, use geo tests, holdouts, brand-lift studies or another incrementality method to compare against a no-ad baseline.

Which metrics should a CTV report include?

A minimum report can contain four blocks. Delivery includes budget, impressions, valid impressions, viewability and TV-off filtration. Viewing includes view-through rate, completion, seconds watched and content context. Audience includes unique reach, average frequency, geography and, where possible, deduplicated reach. Business outcomes include brand search, site sessions, qualified enquiries, sales, ROAS and incrementality.

A high completion rate does not automatically make a campaign successful. A video can play with sound to the end while its message fails to be remembered or reach the right audience. Likewise, low direct conversion does not prove that CTV had no value; its role may have been awareness and future search demand. Digital marketing analytics should therefore interpret TV and CTV signals alongside sales data.

Marketing Partner's perspective

The main lesson from IAB Europe's framework is straightforward: a good media report is not the report with the most numbers. It is the one that explains where each number came from, what its limitations are and how it changes a business decision. Measurement should be designed in the campaign brief before platforms and placements are selected.

Marketing Partner recommends planning TV, CTV and digital video as one audience system rather than separate packages. The objective is not to make one dashboard look impressive; it is to show honestly how advertising contributes to incremental reach, memory, interest and sales. That evidence makes the next budget decision more accountable.

Main source: IAB Europe — Connected TV (CTV) Measurement Framework and Transparency Principles, 1 October 2026. Additional context: IAB Europe press release, 1 October 2026. This article was analysed and adapted for the Azerbaijani market by Marketing Partner.