OTT Video Advertising: Where TV Budgets Go to Work

OTT video advertising is the delivery of video ads through internet-connected streaming platforms, bypassing traditional broadcast and cable infrastructure entirely. It puts your brand in front of viewers on connected TVs, laptops, tablets, and phones, during content they chose to watch, with targeting precision that linear TV never offered.

For marketers managing serious budgets, OTT sits at an interesting intersection: the reach and brand-building power of television, combined with the audience data and measurability of digital. That combination is genuinely useful. But the category is also full of vendor noise, inflated claims, and metrics that sound impressive until you ask what they actually mean for the business.

What Does OTT Actually Mean, and Why Does the Terminology Matter?

OTT stands for “over-the-top,” a reference to delivering content over the internet rather than through a cable or satellite box sitting on top of your television. The term has become an umbrella for a range of things: streaming platforms like Hulu, Peacock, and Paramount+, free ad-supported TV services like Pluto and Tubi, and the connected TV devices, smart TVs, Roku players, and Fire Sticks through which people access them.

You will also encounter CTV, which stands for connected TV. CTV refers specifically to the device or screen. OTT refers to the delivery method. In practice, most people use them interchangeably, and most vendors do too. The distinction matters when you are buying media, because inventory quality and audience behaviour differ significantly between a 65-inch smart TV in a living room and a mobile phone on a commute. Both are technically OTT. They are not the same placement.

I have sat in enough media planning meetings where these terms were used loosely, and the result was a buy that looked like premium CTV but was actually majority mobile and tablet inventory with a small CTV component dressed up to justify the CPM. If you are paying for television-equivalent reach, make sure you are actually getting television-equivalent screens.

How the OTT Ad Ecosystem Is Structured

The OTT advertising market has three broad layers. At the top are the walled gardens: streaming platforms that sell their own inventory directly or through their own programmatic pipes. Netflix, Disney+, and Amazon Prime Video all now have ad-supported tiers, and they sell that inventory with varying degrees of openness. Amazon in particular integrates its retail data in ways that make targeting genuinely interesting for certain categories.

The second layer is the free ad-supported streaming TV market, often called FAST. Platforms like Tubi, Pluto TV, and Samsung TV Plus deliver significant scale, particularly among audiences who have cut the cord but are not paying for premium subscriptions. CPMs here tend to be lower, audience composition tends to skew older and more price-sensitive, and the content environment is mixed. It works for some advertisers and is wrong for others.

The third layer is programmatic OTT, where you buy streaming inventory through demand-side platforms, often across multiple publishers simultaneously. This gives you reach and targeting flexibility, but content adjacency controls are weaker, and the supply chain between your ad and the viewer can involve more intermediaries than you might want. Transparency on where your ad actually ran is a legitimate concern, and it is worth asking your DSP or agency partner to account for it properly.

If you are thinking about how OTT fits within a broader go-to-market approach, the Go-To-Market and Growth Strategy hub covers the planning frameworks that tend to make these channel decisions more coherent and less reactive.

Why OTT Is a Serious Upper-Funnel Tool, Not Just a Digital Novelty

Earlier in my career I spent too much time optimising the bottom of the funnel. Bid adjustments, audience exclusions, match type refinements. It felt productive because the feedback loop was fast and the attribution was clean. What I came to understand, slowly and through a few expensive mistakes, is that a lot of what performance marketing gets credit for was going to happen anyway. The person who searched for your brand name was often already going to buy. You just showed up at the moment of intent and claimed the conversion.

OTT sits further up the funnel. Its job is to reach people who are not yet in-market, build familiarity and preference, and create the conditions that make lower-funnel activity more productive. Think of it like a clothes shop: someone who tries something on is many times more likely to buy than someone who walks past the window. OTT is the equivalent of getting people through the door. Search and social can close the sale once they are inside.

This framing matters because it changes how you evaluate OTT. If you judge it purely on last-click attribution or immediate direct response, it will almost always look weak. That is the wrong lens. The right question is whether it is extending your reach to audiences your lower-funnel channels are not touching, and whether those audiences eventually convert at a higher rate than your baseline.

Vidyard’s research on pipeline generation for go-to-market teams reinforces a related point: video is increasingly central to how buyers engage with brands before they ever raise their hand. OTT extends that logic to broadcast-scale audiences.

Targeting in OTT: What Is Genuinely Useful and What Is Vendor Theatre

The targeting capabilities in OTT are real and they are better than linear TV. You can reach audiences by geography, demographic, household income, content genre, device type, and in some cases purchase behaviour or CRM match. For brands that historically relied on broad linear TV buys and hoped the right people were watching, this is a meaningful upgrade.

But some of the targeting claims in this space are dressed up more than they deserve. Behavioural segments on programmatic OTT are often modelled, not observed. Household-level targeting is an approximation. And the more granular your targeting, the smaller the available audience, which can drive up CPMs to a point where the efficiency argument collapses.

My honest view, built from managing hundreds of millions in ad spend across 30 industries, is that OTT targeting is most useful for broad but meaningful audience definitions: category buyers, geographic concentrations, life stage signals. Trying to layer five or six audience qualifiers onto an OTT buy usually produces a small, expensive, and poorly measured audience. Keep the targeting tight enough to be relevant and wide enough to generate meaningful scale.

For brands operating in complex go-to-market environments, including healthcare and regulated categories, Forrester’s analysis of go-to-market challenges in device and diagnostics illustrates how audience specificity and channel constraints interact in ways that generic targeting frameworks do not anticipate.

Measuring OTT Without Lying to Yourself

Attribution is the honest problem in OTT. Unlike search, where a click creates a direct and traceable path to a conversion, OTT works through impression and memory. Someone watches your ad on a connected TV on a Tuesday evening, thinks about it for a week, and then searches for your brand on their phone the following Monday. The search channel takes the credit. The OTT campaign looks like it did nothing.

There are measurement approaches that help. Matched market testing, where you run OTT in some geographies and hold others out as a control, gives you a cleaner read on incrementality. Brand lift studies, offered by most major platforms, measure awareness and consideration movement among exposed versus unexposed audiences. Household conversion tracking, where a connected TV impression is matched to a subsequent web visit or purchase from the same household IP, is imperfect but directionally useful.

None of these are perfect. I judged the Effie Awards for several years, and one of the things that struck me consistently was how the strongest entries combined multiple measurement approaches rather than relying on a single attribution model. They were honest about what they could and could not prove. That intellectual honesty made the cases more credible, not less.

The principle I apply to OTT measurement is honest approximation. You will not get a clean ROI number. What you can get is a directional read on reach extension, brand metric movement, and downstream search and conversion lift in exposed markets. That is enough to make a rational investment decision, provided you are not comparing it unfairly to the false precision of last-click performance data.

Creative in OTT: The Constraints Are Different From Social Video

OTT creative has different constraints from social video, and conflating the two formats produces mediocre results in both. Social video is typically consumed on a mobile screen, often without sound, in a scroll environment where you have about two seconds to earn attention before the viewer moves on. The creative conventions that work there, fast cuts, text overlays, immediate hook, do not automatically translate to a 30-second connected TV spot watched on a large screen in a lean-back environment.

On connected TV, you have the viewer’s full attention, no competing scroll, and often no skip button. That is a genuine creative opportunity. It is also a responsibility. A weak 30-second ad on CTV is a weak 30-second ad with nowhere to hide. The production bar is higher, the storytelling can be more developed, and brand-building creative that would be invisible on mobile can land properly here.

I have seen brands repurpose their social video assets for CTV buys and wonder why performance was flat. The formats are not interchangeable. If you are making a meaningful OTT investment, the creative budget needs to reflect the format. A 15-second or 30-second spot built for television-style viewing will consistently outperform a social cut-down on the same inventory.

For brands working with creator content as part of their video strategy, Later’s go-to-market guidance on creator campaigns touches on how creator-led video can complement, rather than replace, more structured broadcast formats.

Where OTT Fits in a Growth Strategy

OTT is not a standalone channel. It works best as part of a coordinated growth strategy where upper-funnel investment creates the audience conditions that make mid and lower-funnel activity more efficient. The sequencing matters: OTT builds awareness and familiarity, paid search and social capture the intent that follows, and CRM or loyalty mechanics retain the customers you acquire.

When I was growing the agency team at iProspect from around 20 people to over 100, one of the structural shifts that made the biggest difference was moving away from channel-siloed planning. Performance teams were optimising their channels brilliantly in isolation, but no one was looking at the full funnel and asking whether the upper-funnel investment was actually feeding the lower funnel or whether we were just harvesting existing demand more efficiently. OTT investment that is not connected to a full-funnel strategy tends to produce the latter: impressive reach numbers, low direct attribution, and no clear read on whether the business actually grew.

The growth strategy frameworks that inform this kind of planning are covered in more depth across the Go-To-Market and Growth Strategy hub, which is worth working through if you are building a channel mix from scratch or pressure-testing an existing one.

BCG’s work on go-to-market strategy and long-tail pricing dynamics is a useful reference point for thinking about how channel investment decisions interact with commercial model design, particularly in B2B and multi-segment markets. Their analysis of long-tail pricing in B2B go-to-market contexts illustrates how reach and targeting decisions upstream affect commercial outcomes downstream.

The Budget Question: Who Should Be Spending on OTT?

OTT is not a small-budget channel. The CPMs are higher than most digital display, the creative production costs are real, and the measurement infrastructure to evaluate it properly requires investment. A brand spending a few thousand pounds a month on digital advertising should probably not be prioritising OTT. The economics do not work at that scale.

For brands with meaningful media budgets, particularly those that have historically relied on linear TV and are watching that audience fragment, OTT is a logical evolution rather than a departure. The audience is moving to streaming. The inventory is following. The question is not whether to engage with OTT but how to do it in a way that is commercially disciplined rather than trend-driven.

The right entry point varies by category. Retail, automotive, financial services, and consumer packaged goods have the audience scale and the measurement infrastructure to make OTT work relatively straightforwardly. B2B is harder. The audiences are smaller, the targeting is less precise, and the purchase cycles are long enough that attribution becomes genuinely difficult. That does not mean OTT has no role in B2B, but it requires a more careful argument for the investment.

For growth teams thinking about how to model and prioritise channel investment, Semrush’s overview of growth tools and frameworks covers some of the analytical infrastructure that supports better channel allocation decisions.

What Good OTT Planning Actually Looks Like

Good OTT planning starts with a clear audience definition, not a platform choice. Who are you trying to reach, where are they watching, and what content environment is most appropriate for your brand? Those questions should drive the inventory strategy, not the other way around.

From there, the planning questions are: What is the reach and frequency target? What creative assets do you have, and are they built for the format? How will you measure success, and what proxies will you use given the attribution limitations? How does this investment connect to the rest of the funnel?

I remember early in my agency career being handed the whiteboard pen in a Guinness brainstorm when the founder had to step out for a client call. My internal reaction was something close to panic. But the discipline of having to organise thinking quickly, in front of a room, forced a clarity that more comfortable planning processes often lack. OTT planning benefits from the same discipline: be specific about what you are trying to achieve, be honest about what you can measure, and do not let the platform’s reach numbers substitute for a coherent strategy.

The brands that get the most from OTT are not the ones chasing the newest inventory or the most sophisticated targeting. They are the ones that are clear about the role the channel plays in their growth model, patient enough to measure it properly, and disciplined enough to connect it to the rest of their marketing.

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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