OTT Advertising: What It Costs You to Get It Wrong

OTT advertising is the delivery of video ad content directly to viewers via internet-connected devices, bypassing traditional broadcast and cable infrastructure. It covers streaming platforms, smart TVs, connected devices, and on-demand services, and it has become one of the more commercially significant shifts in how brands reach audiences at scale.

The opportunity is real. So is the risk of getting in without understanding what you are buying, who you are reaching, and whether any of it is moving your business forward.

What OTT Advertising Actually Is

OTT stands for “over-the-top,” a reference to content delivered over the internet, on top of traditional broadcast infrastructure. The ad formats themselves are not new. Pre-roll, mid-roll, pause ads, display overlays. What is new is the context: a viewer who has chosen a streaming environment, is often logged in, and is watching on a device that can carry first-party identity data.

That distinction matters commercially. Linear TV buys audiences in aggregate. You buy a demographic profile attached to a programme slot and you hope the right people are watching. OTT, in theory, lets you buy closer to the individual. Whether that theory holds in practice depends on the platform, the data quality, and what you are actually trying to do with the impression.

Connected TV, or CTV, is often used interchangeably with OTT but they are not the same thing. CTV refers specifically to the device, a smart TV or streaming stick. OTT refers to the delivery method. You can access OTT content on a phone or laptop. The distinction matters for measurement, for creative sizing, and for how you think about the viewing environment.

The major platforms in this space include ad-supported tiers of Netflix, Disney+, Peacock, Paramount+, Max, and Hulu, alongside free ad-supported streaming services like Tubi, Pluto TV, and the Roku Channel. Each has different inventory quality, different audience data, and different minimum spend thresholds. Treating them as interchangeable is a planning error that shows up in performance reports six weeks later.

Why the Audience Shift Is Commercially Significant

I spent a long stretch of my career running agencies where TV planning was largely a linear exercise. You bought GRPs, you negotiated rates, you argued about reach and frequency curves, and you hoped the creative was strong enough to do the work. The audiences were large and relatively captive.

That model has fractured. The audiences that linear TV used to deliver reliably, particularly younger demographics and higher-income households, have migrated to streaming at a rate that makes ignoring OTT commercially untenable for most brands. This is not a trend. It is a structural shift in how people consume video content, and it has been accelerating for the better part of a decade.

The implication for growth strategy is straightforward: if your brand needs to reach new audiences to grow, and those audiences are no longer watching traditional TV in meaningful numbers, then your media plan needs to reflect that reality. This is the same principle that applies to any channel decision. You go where the people you need to reach actually are.

Earlier in my career I overvalued lower-funnel performance channels because the attribution looked clean. The numbers were there in the dashboard, the cost per acquisition felt controllable, and it was easy to justify the spend. What took longer to see was how much of that performance was capturing demand that already existed, rather than creating new demand. OTT sits firmly in the demand creation space. That is not a weakness. It is the job description. Brands that understand this will plan and measure it correctly. Brands that do not will cancel the budget after one quarter.

If you are thinking through how OTT fits within a broader commercial framework, the Go-To-Market and Growth Strategy hub covers the planning principles that sit above channel decisions and connect media investment to business outcomes.

How OTT Inventory Is Bought and Why It Matters

There are three main routes to OTT inventory. Direct deals with publishers, private marketplace deals through programmatic pipes, and open programmatic auctions. Each has a different risk and reward profile.

Direct deals give you the most control and the clearest inventory quality. You know exactly where your ad is running, you can negotiate placement, and you get first-party audience data from the platform. The trade-off is minimum spend commitments and less flexibility. This route suits brands with consistent budgets and a clear enough audience strategy to justify the commitment.

Private marketplace deals sit in the middle. You get programmatic buying efficiency with a degree of inventory curation. You are buying from a defined set of publishers rather than the open market, which improves brand safety and reduces the risk of your ad appearing somewhere you would rather it did not.

Open programmatic is where things get complicated. The reach is theoretically vast and the CPMs can look attractive. But inventory quality varies enormously, brand safety controls are harder to enforce, and the data attached to the audience segments is often less reliable than it appears. I have seen brands run programmatic OTT campaigns at scale and spend the next month trying to work out why the reach numbers did not match anything in their own measurement systems. The answer, usually, is that they were buying a version of reach that did not match their actual audience.

Understanding market penetration as a growth lever is useful context here. Semrush’s breakdown of market penetration strategy is a good reference point for thinking about how channel investment connects to audience reach objectives, particularly when you are trying to grow into new segments rather than consolidate existing ones.

The Targeting Question

OTT targeting is one of the more oversold propositions in modern media buying. The pitch is compelling: reach specific audiences, in a premium video environment, with the precision of digital. The reality is more layered.

The best targeting in OTT comes from platforms with strong first-party data. A logged-in streaming service knows who is watching, what they watch, and often has purchase or behavioural data attached to the account. That is genuinely useful. A programmatic DSP aggregating third-party segments across open inventory is a much weaker proposition, and the deprecation of third-party cookies has made that weaker still.

Household-level targeting is a common approach in CTV, and it has real value for brands selling products with household purchase decisions. But it is worth being clear-eyed about what you are buying. A household segment is not an individual. A modelled lookalike audience is not the same as a first-party match. These distinctions affect how you interpret reach and frequency data, and they affect how you think about the relationship between your OTT investment and any downstream outcomes you are trying to attribute.

The brands that get the most out of OTT targeting tend to bring their own data into the equation. Customer lists, CRM segments, suppression lists. They use the platform’s matching capabilities to find people who look like their best customers, and they exclude people who are already deep in the purchase process. That is a disciplined approach to audience strategy, and it is different from just selecting demographic checkboxes in a buying platform.

Creative Is Where Most OTT Campaigns Fail

I have judged the Effie Awards. The work that wins is not the work with the most sophisticated media plan. It is the work where the creative and the strategy are inseparable. The brief produced the idea. The idea served the objective. Everything else was execution.

OTT creative fails most often because brands repurpose linear TV ads without thinking about the viewing context. A 30-second spot built for appointment viewing on a broadcast channel does not automatically translate to a streaming environment where the viewer has made an active choice about what they are watching and has a certain tolerance for interruption that is different from passive broadcast consumption.

The first five seconds carry disproportionate weight in OTT. Many formats are skippable, and even in non-skippable environments, the viewer’s attention is not guaranteed just because the skip button is unavailable. Brands that open with a logo and a slow brand build are leaving most of the impression’s value on the table.

Length also matters more than brands typically account for. Fifteen-second and six-second formats perform differently in OTT than in linear. They can be more effective at frequency when used alongside longer brand-building formats, rather than as standalone buys. The question is what job each format is doing and whether the creative has been built to do that job in that length.

Working with creators who understand the platform environment can help here. Later’s work on going to market with creators covers some of the practical considerations around content that is built for how people actually watch, rather than how planners assume they watch.

Measurement in OTT: Honest Approximation Over False Precision

Measurement is the most contested area in OTT, and the one where the most commercial damage is done. Brands either expect too much precision and cancel campaigns that are working, or they accept platform-reported metrics at face value and fund campaigns that are not.

The core measurement challenge is that OTT sits in a viewing environment that does not have the same closed-loop attribution as search or social. You can track impression delivery. You can track completion rates. You can use brand lift studies to measure awareness and consideration shifts. What you cannot do reliably is draw a straight line from an OTT impression to a sale, particularly in categories with long purchase cycles or multi-touch journeys.

The honest approach is to define what you expect OTT to move before you run the campaign, and then measure whether it moved. If the objective is reach into a new audience segment, measure reach. If the objective is brand consideration among a specific demographic, run a brand lift study. If the objective is to reduce the cost of acquiring customers who are already in-market, OTT is probably not the right channel for that job.

I have sat in enough post-campaign reviews to know that the measurement conversation usually should have happened before the campaign was approved, not after. When the brief does not specify what success looks like, the post-campaign analysis becomes a negotiation about which numbers to show the client. That is not measurement. That is retrospective justification.

Incrementality testing is the most rigorous approach available. Hold out a matched audience segment from your OTT buy, measure the difference in outcomes between exposed and unexposed groups, and use that to estimate the true contribution of the channel. It is not perfect, but it is a more honest approximation than last-click attribution or platform-reported view-through conversions.

BCG’s work on commercial transformation in go-to-market strategy is worth reading for the broader principle: measurement frameworks need to be built around business outcomes, not channel metrics. That applies to OTT as much as it applies to anything else in the media mix.

Where OTT Fits in a Growth Plan

OTT is a reach medium. It is best deployed in the upper and mid funnel, where the objective is to build awareness, shift brand perception, or reach audiences who are not yet in the market for what you sell but will be. Treating it as a performance channel, optimising for click-through rates or view-through conversions, will consistently produce disappointing results and lead to the wrong conclusions about whether the channel works.

The analogy I keep coming back to is the clothes shop. Someone who tries on a garment is dramatically more likely to buy it than someone who walks past the window. OTT is the window. It creates the conditions for consideration. It does not close the sale. Brands that understand that distinction will plan OTT alongside their lower-funnel activity, not instead of it, and they will measure the two things separately.

For brands in growth mode, particularly those trying to reach audiences they have not historically accessed through linear TV, OTT offers a genuinely useful capability. The ability to reach cord-cutters and cord-nevers, to target by household income or purchase behaviour, and to do so in a premium video environment is commercially relevant. The question is whether the brand has the creative, the budget, and the measurement discipline to make it work.

Smaller brands sometimes assume OTT is only for large advertisers. That is less true than it was. Minimum spend thresholds on programmatic platforms have come down, and some streaming services now offer self-serve buying options that make entry more accessible. The constraint for smaller brands is usually creative production, not media budget. A campaign that cannot afford to produce OTT-quality video at the right lengths and formats will underperform regardless of how well the media is planned.

The growth strategy frameworks that sit above channel decisions are covered in more depth across The Marketing Juice’s growth strategy content, which connects media investment to the commercial objectives that should be driving it.

The Practical Planning Questions

Before committing budget to OTT, the questions worth answering are operational rather than philosophical. Where is your audience? Not where you assume they are, but where the data actually shows them spending their viewing time. Which platforms index highest for your target segment, and do those platforms offer the buying method that matches your budget and flexibility requirements?

What creative do you have, or can you produce, that is built for the OTT environment? Not repurposed. Built for it. What lengths, what opening seconds, what call to action if any?

What does success look like before the campaign runs? Not after. Define the metric, define the threshold, define the measurement methodology. If you cannot answer those questions before the campaign starts, you are not ready to run it.

And what is the rest of the funnel doing while OTT is running? If OTT is building awareness and consideration, something else needs to be capturing that demand when it materialises. A brand that runs OTT in isolation and then measures it against direct response benchmarks will always conclude it does not work. The channel is not the problem. The planning is.

For brands thinking about how to scale media investment without losing commercial discipline, Crazy Egg’s overview of growth frameworks covers some of the underlying principles around channel selection and prioritisation that apply here.

The pricing and go-to-market considerations for brands entering new channels also vary significantly by market structure. BCG’s analysis of long-tail pricing in go-to-market strategy is a useful reference for understanding how channel economics affect the overall commercial model, particularly for brands with complex product portfolios.

What Good OTT Planning Looks Like in Practice

The best OTT campaigns I have seen share a few characteristics. They start with a clear audience problem, not a channel opportunity. The brand has identified a segment it cannot reach efficiently through existing channels, and OTT is the answer to that specific problem, not a default addition to the media plan because streaming is growing.

They treat creative as a planning input, not a production afterthought. The brief specifies what formats are needed, what the opening seconds need to accomplish, and what the brand should feel like in a streaming environment. Creative agencies are brought in early enough to actually influence those decisions.

They have a measurement plan that was agreed before the campaign launched, and that plan is honest about what OTT can and cannot be expected to demonstrate. Brand lift, reach into new segments, and contribution to consideration are legitimate OTT metrics. Cost per acquisition as a primary KPI is not.

And they are connected to the rest of the media plan. Retargeting audiences who have been exposed to OTT through social or search. Coordinating messaging across the funnel so that the brand someone sees on their smart TV is consistent with what they encounter when they go looking. That coordination is where the compound effect of a well-planned media mix shows up, and it is the thing most brands underinvest in relative to the media spend itself.

The early days of my agency career involved a lot of channel-first thinking. A client would come in with a TV budget, and the question was how to spend it on TV. What I learned over time, and what took longer to learn than it should have, is that the channel is always downstream of the audience and the objective. OTT is no different. It is a powerful medium in the right circumstances. In the wrong circumstances, it is an expensive way to reach people who were never going to buy from you anyway.

About the Author

Keith Lacy is a marketing strategist and former agency CEO with 20+ years of experience across agency leadership, performance marketing, and commercial strategy. He writes The Marketing Juice to cut through the noise and share what works.

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