CTV vs. linear TV: The decision framework for today's media planner

Every media plan eventually runs into the same question: In CTV vs. linear TV, how much should go to each and who's making that call based on anything more than gut feel?

At the simplest level, CTV is ad-supported streaming delivered over internet-connected devices, while linear TV is scheduled programming delivered through cable or broadcast; the real differences for advertisers show up in reach, targeting, measurement and cost. That matters more now because audience behavior keeps shifting toward streaming, even as brands still need the broad reach linear can deliver.

For media planners and advertisers trying to allocate budget across both channels, the old answer was often, "neither side has great data, so split the difference." That’s changing—but maybe not in the direction you’d expect. Before we get into how advertisers should plan around this, it’s worth being precise about the difference between linear and CTV, because the line between them is blurrier than it used to be. From there, we’ll break down audience shifts, compare CTV and linear side by side, look at when each makes sense on its own or in combination and explain why identity resolution has become central to building a smarter, data-driven TV plan.

What linear TV and CTV actually mean (and why the line is blurring)

Linear TV is the traditional way most of us grew up watching television. In other words, linear TV refers to scheduled programming delivered through traditional broadcast, cable networks or cable satellite services; viewers tune in at a set time, then ads get placed based on show selection, time slot and demographic assumptions about who's likely watching.

Connected TV is the new(ish) channel: ad-supported streaming delivered over IP-connected devices like smart TVs, streaming sticks and gaming consoles. Instead of following a network's schedule, audiences choose what to watch and when. That single shift—from "the network decides" to "the viewer decides"—is what makes CTV a fundamentally different advertising environment, not just a different delivery pipe.

You'll also run into some adjacent terms while researching this space. OTT (any video over the internet, on any device), addressable TV (targeted ads delivered within a linear broadcast) and advanced TV (the umbrella term covering all of the above). Worth knowing, but for this piece, we're focused squarely on the linear-vs-CTV comparison.

The clearest sign of how much ground has shifted: live sports, once the single most reliable reason to keep a cable subscription, are increasingly streaming-exclusive. Major leagues and tentpole events that used to be a given on broadcast now show up first (or only) on a streaming platform. When live sports start moving, that's a real signal about where the audience, and the ad dollars, are headed next.

So how should a media planner actually think about choosing between them? It comes down to four considerations: reach, targeting, measurement and cost. Linear TV generally relies on broad demographic targeting within regional DMAs, while CTV supports more precise targeting. Let's take them one at a time, then put them side by side.

The audience has already moved—but not entirely

Streaming has overtaken broadcast and cable individually in share of total TV viewing time, and Nielsen's The Gauge has shown that lead holding through Q1 2026, with streaming consistently capturing somewhere around 47% of total viewing—ahead of broadcast and cable on their own.

But "moved" doesn't mean "gone." Linear retains real strength with viewers 55 and up. EMARKETER data shows roughly 42% of linear TV viewers fall into that 55+ bracket, and baby boomers spend close to four hours a day with linear TV, noticeably more than any other generation. If your audience skews older, linear isn't a legacy habit you're stuck with—it's still where a meaningful chunk of that audience actually is.

One more data point worth knowing as you think about household-level planning: the average U.S. household subscribes to several streaming services at once. That's part of why CTV planning feels more fragmented than linear ever did. You're not buying one schedule, you're assembling coverage across a shifting set of services.

CTV vs. linear TV: Key differences and side-by-side comparison

Here's the comparison that actually matters when you're deciding where budget goes:

The TLDR: linear is built around buying against broad audience estimates and broad audiences, while CTV enables more precise audience targeting through identity-based, data driven targeting.

But notice the caveat sitting in that last row. CTV's frequency-control advantage only shows up "when identity is anchored to a household or individual." That's not a footnote—it's the whole story. Every advantage in the CTV column of this table is downstream of one underlying mechanism: identity resolution. Without it, CTV's targeting and frequency claims don't actually hold up in practice.

When to choose CTV, when to choose linear, and when to use both

Three scenarios cover most of the real decisions media planners face:

Use CTV advertising when:

• The goal is performance or direct response
• The audience is niche rather than mass
• You're retargeting people who've already engaged with you digitally
• The campaign is tied directly to ROAS

CTV's precision is wasted on a goal that just needs broad awareness—but it's exactly the right tool when you need to know who you reached and what they did next.

Use linear advertising when:

• You need broad reach against viewers 55 and up
• You're buying into a live-sports tentpole moment
• The goal is mass awareness at scale rather than a measurable response.

Linear still does the last part better than CTV can, partly because of where that older audience's attention actually is, and partly because live event inventory at scale is still a linear strength.

Go hybrid with CTV and linear advertising (the recommended approach for most enterprise advertisers). Use CTV to layer incremental reach on top of a linear baseline, then deduplicate across both through identity resolution so you're not double-counting (or double-paying for) the same household. This is where most sophisticated media plans are actually landing in 2026, and for good reason—it captures linear's scale and CTV's precision instead of forcing a choice between them.

It's worth addressing a misconception directly here: CTV is not on track to fully replace linear TV by 2028. What's actually happening is more specific. eMarketer projects CTV ad spending will surpass total traditional TV ad spending for the first time in 2028, and CTV has already surpassed primetime linear in upfront ad spending as of 2026. That's a real and significant shift, but it's a crossover in ad dollars, not a disappearance of linear viewership. Live sports, news and older demographics are likely to keep linear relevant well past that crossover point.

Why identity is the real difference (not just the delivery pipe)

Here's the thing that gets lost when people frame this as "streaming vs. broadcast": that's not actually the headline difference. The real difference is whether you know who saw the ad.

Linear TV was never built to answer that question with any precision. It estimates exposure through panels and demographic proxies, and that's always been good enough because there was no real alternative. CTV can answer the measurement question, but only if identity resolution is actually doing the work underneath it. Without identity resolution, CTV doesn't automatically become the precise, deduplicated channel described in the comparison table above—it just becomes a more expensive version of the same blind buy.

This is where COREid comes in—Epsilon's identity spine, built to anchor CTV audiences to real people rather than IP addresses or device IDs that may or may not represent who you think they are. That distinction—a real person versus a probabilistic guess—is the entire reason CTV's promised advantages over linear are achievable at all.

A modern TV advertising plan starts with real people, not screens

Linear and CTV both exist to put a brand message in front of the right person, but do diverge sharply in capability. Linear still wins on scale and on reaching an audience that hasn't fully migrated to streaming. CTV wins on precision, but only when the identity infrastructure underneath it is solid.

The right plan isn't decided by which screen looks more modern. It's decided by your audience, your outcome and whether your identity infrastructure can actually back up the claims either channel is making.

If you're ready to build a plan around real people instead of screens, explore Epsilon Digital's CTV advertising platform or read the CTV buyer's guide for a framework on evaluating partners.

FAQ

Is CTV the same as OTT?

No. OTT refers to streaming TV delivered through ott streaming services; CTV is the device class. CTV is the internet-connected device environment used to access streaming platforms on a television screen. All CTV is OTT, but not all OTT is CTV (mobile/desktop streaming is OTT but not CTV).

Will CTV replace linear TV?

Not entirely. Linear retains scale for live events and older demos. But CTV crossed total ad-spend parity in 2025 and is forecast to surpass linear in subsequent years. At the same time, linear tv ad spend is projected to decline by more than 11% in 2026, even as it still matters for live events and older audiences.

Is CTV cheaper than linear TV?

CPMs are often higher on CTV (~$20–$40 vs. ~$10–$25 for linear), but the effective cost per qualified impression is lower because CTV reaches your audience with less waste. CTV pricing is also often more flexible because buyers can access inventory programmatically rather than only through traditional linear TV advertising deals.

Can you measure CTV the same way as linear TV?

No. CTV delivers impression-level and log-level data closer to digital reporting, while linear tv measurement still relies on panel-based ratings, though cross-platform tracking is improving and still lags unified CTV reporting.

What about addressable TV? Is that linear or CTV?

Addressable TV is a hybrid—addressable linear delivers different ads to different households watching the same live programming, unlike standard linear where the same ad runs for everyone in that feed. CTV is inherently addressable.