What CTV? The Marketer’s Guide to Connected TV and CTV Advertising

If you’re a marketer still pouring budget into traditional cable and hoping for the best, we need to talk. Connected TV has completely rewritten the rules of TV advertising, and it’s not slowing down. This guide breaks down what CTV actually is, how CTV advertising works, why ad spend is flooding into streaming TV ads, and how you can launch your own CTV campaigns without losing sleep. Let’s get into it.

Key Takeaways

• Connected TV (CTV) refers to any television device that connects to the internet for streaming video content-think smart TVs, Roku, Amazon Fire TV, Apple TV, and gaming consoles. CTV is a subset of OTT focused specifically on television screens, not phones or laptops.

• CTV advertising works programmatically, enabling flexible budgets for advertisers. Most CTV ads are served in milliseconds through real-time bidding, and common ad formats include 15- to 30-second non-skippable in-stream spots, interactive overlays, and shoppable units.

• The core benefits for advertisers are massive: advanced CTV targeting by household, demographic, and interest data; video completion rates exceeding 95%; measurable brand lift and conversions; and premium, brand-safe advertising inventory.

• Getting started means choosing a CTV advertising platform, defining your audience segments, setting goals, uploading creative, and optimizing based on metrics like ROAS, VCR, and reach.

• CTV advertising is a $30 billion market in the US and growing, while linear TV ad budgets are projected to decline. If your media mix doesn’t include connected TV advertising yet, you’re leaving reach on the table.

What Is CTV (Connected TV)?

Connected TV-or CTV-is any television that connects to the internet for streaming. That’s the simplest way to put it. CTV refers to the device used for streaming, whether it’s a smart TV with a built-in operating system (Samsung, LG, Hisense), a streaming stick or streaming device like Roku or Amazon Fire TV Stick, an Apple TV box, or a gaming console like PlayStation or Xbox. If a show or movie is being watched on a TV screen via an internet connection rather than through traditional cable or satellite providers, that’s connected TV viewing.

Connected TV (CTV) connects to the internet for streaming and delivers content via the internet through Subscription Video on Demand and Ad-supported Video on Demand. CTV lets viewers have on-demand control over what they watch and allows streaming of both live and pre-recorded content-from live sports and news programming to binge-worthy series.

Here’s how mainstream this has become:

• 88% of US households own at least one CTV device.

• CTV viewership represents over 80% of all streaming content consumed on streaming services.

• Average daily CTV viewing time in the US hit roughly 2 hours and 15 minutes in 2024, and it’s climbing toward 2 hours 34 minutes by 2026, according to industry projections.

The term “connected TV CTV” pops up interchangeably in industry conversations. Just remember: CTV is about the device and screen, not the app or service itself. Whether the streaming content comes from a major platform or a free ad-supported channel, if it’s on a TV via the internet, it’s CTV.

CTV vs OTT vs Streaming TV vs Linear TV

These terms get tangled constantly, and honestly, even seasoned media buyers mix them up. But getting the distinction right matters for your media mix, measurement, and budget allocation.

• OTT (over the top): OTT refers to the content streamed over the internet, bypassing traditional cable or satellite providers. OTT includes video watched on any device-phones, laptops, tablets, and TVs. If you’re watching Prime Video on your phone, that’s OTT but not CTV.

• CTV: CTV is a subset of OTT focused on television screens. When that same Prime Video stream plays on your smart TV or Fire TV stick, now it’s CTV. The device is what makes the difference.

• Streaming TV: Often used synonymously with OTT. It covers live and on-demand streaming video content across all devices. Platforms like Pluto TV, Hulu, or Peacock are streaming TV whether accessed on a laptop or a connected TV.

• Linear TV: Traditional TV means scheduled programming delivered via cable, satellite, or broadcast antennas. Fixed airtimes, panel-based measurement (like Nielsen ratings), and broad demographic targeting by daypart or channel. No on-demand control for viewers.

A single service like Netflix or Disney+ can be both OTT and CTV depending on where you watch. Advertisers treat CTV and broader OTT separately because the CPMs, creative specs, and brand impact differ significantly. CTV commands higher CPMs but delivers a more impactful, lean-back viewing experience on the big screen.

What Is CTV Advertising?

CTV advertising refers to video ads and related formats delivered within streaming content on internet-connected TV devices-smart TVs, Roku, Fire TV, gaming consoles, and similar CTV devices. CTV ads typically appear before, during, or after streaming TV shows, movies, live sports, or free ad-supported streaming TV (FAST) channels.

• CTV advertising is usually bought digitally, often programmatically, and uses advanced data signals for precise targeting that traditional television simply can’t match.

• Connected TV advertising combines the impact of television and digital advertising capabilities into a single channel.

• CTV advertising is a $30 billion market in the US, with ad spend growing faster than nearly every other digital advertising category. IAB’s 2025 report pegged US CTV ad spend at roughly $26.6 billion in 2025, and projections push toward $46.9 billion by 2028.

• CTV ads differ from online video on websites or social video ads on platforms like YouTube or TikTok. CTV is specifically about the TV screen, professionally produced content, and a viewer who’s engaged in a lean-back environment.

How CTV Advertising Works

Here’s the quick version of how CTV advertising works, from the moment a viewer hits play to an ad appearing on screen:

• The supply chain: Media owners and publishers (streamers, FAST channels, streaming apps) provide advertising inventory. SSPs help monetize that inventory. DSPs and CTV advertising platforms represent advertiser demand. Most CTV ad decisions happen in milliseconds.

• The auction: When a viewer starts a show, the streaming app sends a bid request with targeting signals-device info, household data, content metadata. DSPs evaluate using data (first-party, contextual, behavioral), place a bid, and the winning ad is served.

• Identity and privacy: CTV advertising works at the household or device level using IP addresses, device IDs, and privacy-compliant identity solutions. Third-party cookies don’t work on TV, so CTV relies on hashed identifiers, identity graphs, and clean rooms. CTV ads can be targeted to specific households based on data signals, which is a massive leap from the blunt demographic targeting of linear TV ads.

• Content types: CTV ads run across on-demand shows, live sports, news, and FAST channels-any content delivered through streaming apps on CTV platforms.

• Buying methods: Some inventory is bought via direct deals with specific publishers. Much of the growth sits in programmatic guaranteed deals and auction-based buys through private marketplaces or open exchanges.

Common CTV Ad Formats

CTV ad formats are mostly full-screen video, but the format landscape is expanding fast. Here’s what you’re working with:

• In-stream video ads: The bread and butter. In-stream video ads typically last 15 to 30 seconds and run as pre-roll ads, mid-roll, or post-roll during streaming content. Most are non-skippable, which is why video completion rates are so high.

• Interactive video ads: Interactive video ads allow viewer engagement through clickable elements-remote-based interactions, on-screen polls, product carousels, or QR code prompts. Engagement rates for interactive CTV ads run 5–15% versus 0.5–2% for standard video.

• Display ads: Display ads are smaller and shown as overlays on video content or as home screen placements-featured tiles, banners, or “mast” units on smart TV OS menus (like Roku or Fire TV dashboards).

• Pause and screensaver ads: Triggered when content is paused or when the screen is idle. The IAB Tech Lab’s CTV Ad Portfolio now standardizes formats including pause, screensaver, overlay, squeezeback, in-scene, and menu placements.

• Shoppable CTV ads: Let viewers explore or purchase products without leaving the screen-think on-screen product info that connects to e-commerce via a QR code or remote click.

Creative tip: branding should appear within the first few seconds, text must be legible from across a room, and every ad needs a clear call-to-action. If you’re using a QR code, tell viewers exactly what to do.

Benefits of Connected TV Advertising

Connected TV constitutes a high-impact viewing environment for advertisers. It brings the emotional weight of the big screen together with the precision of digital. Here’s why it deserves a prominent spot in your media mix:

• Reach cord-cutters and cord-nevers: Connected TV addresses audiences abandoning traditional cable and satellite packages. In 2022, 92% of American households could be reached by CTV advertising-that’s a wider audience than most linear TV buys can touch. Over 80% of viewing on streaming services is through CTV.

• Precision targeting: CTV allows precise audience targeting based on demographics and interests, plus layered behavioral and contextual signals. You’re not buying a daypart and hoping-you’re reaching specific audiences at the household level.

• Completion and engagement: CTV ads have completion rates exceeding 95%, and CTV ads drive engagement rates 10.3 times higher than desktop video. That’s not a rounding error-that’s a fundamentally different viewing context.

• Measurement and attribution: Connected TV provides better measurement than traditional television. You can track impressions, reach, frequency, and connect ad exposure to website visits, app installs, or in-store sales.

• Brand safety: CTV ads run alongside professionally produced streaming content-shows, movies, live events. The inventory quality is leagues ahead of much of the open web.

• ROI clarity: While CTV CPMs can run higher than some digital channels, better targeting and reduced ad waste often improve cost-per-outcome metrics. Connected TV advertising combines the impact of television and digital advertising capabilities, making every dollar spent work harder.

CTV Targeting and Identity

CTV targeting has to balance precision with privacy-and it does it well. Here’s how advertisers reach the right households:

• Geo-targeting: Country, region, city, ZIP code, or even radius-based targeting around key markets. CTV enables hyper-local targeting based on IP addresses, which means local businesses can deliver ads to nearby households efficiently.

• Demographics and interests: CTV allows targeting based on demographics and interests-age, gender, income, and content genre preferences like sports, news, or lifestyle.

• First-party data: Advertisers who own first-party data (CRM lists, website visitors, app users) can build custom audience segments to reach existing customers or high-value prospects. First-party data enhances audience targeting in CTV campaigns significantly.

• Behavioral and purchase intent segments: Aggregated viewing habits and purchase intent data from partners within a CTV advertising platform let you target audiences showing active interest in your category.

• Lookalike audiences: Find new viewers in households that resemble your best customers, expanding reach while keeping relevance tight.

• Cross-device retargeting: Viewers exposed to a CTV ad can later see follow-up ads on mobile or desktop, enabling sequential messaging that moves them down the funnel across multiple devices.

• Household-level identity: Device graphs and household-level IDs unify exposure across screens while keeping user-level data pseudonymous and privacy-compliant. CTV ads can be targeted to specific households using data signals rather than individual tracking.

Key CTV Metrics, Brand Lift, and Measurement

CTV gives marketers digital-style metrics for the TV screen. CTV allows for precise measurement of reach and frequency, and CTV platforms provide real-time performance metrics for advertisers. Here’s what to track:

• Impressions and reach: How many times your ad was served and how many unique households saw it.

• Frequency: How often each household was exposed. Watch for frequency skew-some households get bombarded while others barely see your ad.

• Video completion rate (VCR): The percentage of viewers who watched your entire ad. CTV ads can achieve video completion rates exceeding 95% because most in-stream spots are non-skippable.

• Cost metrics: CPM (cost per thousand impressions), CPCV (cost per completed view), CPA (cost per acquisition). Each tells a different story about efficiency.

• Return on ad spend (ROAS): Return on ad spend can be accurately measured in CTV by connecting impressions to conversions-web sales, app installs, even in-store visits via footfall attribution.

• Brand lift: A structured way to measure changes in awareness, consideration, favorability, or purchase intent after exposure to CTV advertising. One brand saw a 6.7% lift in brand favorability from interactive CTV units versus 5.54% from standard video.

• Incrementality testing: Isolates the incremental impact of CTV on conversions and revenue generated versus other channels. This is how you prove CTV isn’t just duplicating reach from search or social.

CTV Ad Spend, Buying Methods, and CTV Advertising Platforms

Between 2024 and 2026, advertisers have been aggressively reallocating ad spend from linear TV and some digital channels into connected TV. The market projects CTV ad spending to grow significantly while linear TV is projected to decline-eMarketer forecasts CTV could reach $46.9 billion by 2028. CTV advertising accounts for nearly 25% of ad spend in the US already.

• Direct buys: Lock in inventory with a specific publisher or streamer-say, a particular show or content category on a major platform.

• Programmatic buys: Use a CTV advertising platform or DSP to access inventory across multiple streaming publishers. Connected TV allows programmatic buying enabling flexible budgets for advertisers of all sizes.

• Self-serve CTV ads managers: These tools let marketers set budgets, choose targeting, upload creative, and track performance. Advantages include centralized control, flexible budgets, fine-grained CTV targeting, and real-time optimization.

• Typical spend patterns: Smart advertisers test with smaller budgets, prove ROAS and brand lift, then scale into always-on or seasonal CTV campaigns.

CTV CPMs are often higher than social or display, but the targeting precision and household-level reach frequently deliver competitive or superior cost-per-outcome metrics. Don’t let the sticker price scare you-look at the results per dollar spent.

How to Get Started with CTV Ads

Launching a CTV campaign is more manageable than you think. Here’s the step-by-step:

1. Define objectives: Are you after top-of-funnel awareness, mid-funnel consideration, or lower-funnel conversions? Decide how you’ll measure success-brand lift, website visits, ROAS.

2. Choose ad formats and creative: Make sure your video assets work on the big screen. Clear branding in the first 3–5 seconds, legible text, strong call-to-action. Consider adding a QR code or interactive element where the platform supports it.

3. Select your CTV advertising platform: Evaluate based on inventory access, targeting options, reporting features, and whether you want self-serve or managed service.

4. Build your CTV targeting plan: Layer geo, demographic, contextual, and first-party data to target audiences precisely. Test lookalike and retargeting audience segments alongside your core segments.

5. Launch with guardrails: Set frequency caps to avoid ad fatigue, apply brand safety settings, and monitor core metrics-impressions, VCR, reach, frequency, conversions-at least weekly.

6. Optimize and learn: Shift CTV ad spend toward best-performing audiences, creatives, and publishers. Run post-campaign brand lift studies. Feed those learnings into your next flight.

Future Trends in Connected TV Advertising

CTV is still evolving fast-and honestly, that’s what makes it exciting. Here’s where things are headed through 2026 and beyond:

• FAST and ad-supported tiers are booming: Free ad-supported streaming TV services keep expanding inventory. Reports indicate 77% of CTV users regularly watch FAST apps, giving advertisers more options at varied price points.

• Shoppable CTV ads are growing up: Commerce-focused formats blur the line between branding and direct response. Viewers can explore products, add to wish lists, or scan a QR code to checkout on mobile-all without leaving the big screen.

• Privacy-preserving data collaboration: Clean rooms and secure identity graphs make CTV targeting and attribution more accurate without exposing raw user data. This is critical as privacy regulations tighten.

• Unified cross-screen measurement: The industry is pushing to combine CTV, mobile, desktop, and even linear TV data into a single view of reach and frequency. How many viewers you actually reached across all screens is the question everyone wants answered.

• AI-powered optimization: Automation is helping advertisers refine creative, targeting, and budgeting with less manual effort-delivering ads to new viewers more efficiently and reducing wasted impressions.

The trajectory is clear. CTV isn’t a trend you jump on and off. It’s where the audience lives, and it’s where your media mix needs to be.

FAQ

Here are answers to some of the most common questions we hear from marketers exploring CTV.

Is CTV advertising only for large national brands?

Not anymore. Modern CTV advertising platforms support local and mid-market advertisers with smaller budgets and precise geo-targeting. Local businesses can use radius-based CTV targeting around stores or service areas to reach nearby households in key markets, making it practical for businesses that never would have considered TV advertising before.

How much does it cost to run CTV ads?

CTV pricing is typically CPM-based, with rates varying by content quality, audience specificity, and buying method. Some self-serve CTV advertising platforms allow test budgets starting in the low thousands of dollars, while major network upfront deals require significantly higher commitments. Revenue generated depends on how well you’ve matched targeting to your ideal audience, not just how much you spend.

Can I track conversions and ROAS from CTV campaigns?

Yes. CTV campaigns can be tied to web visits, app installs, online sales, and sometimes offline store visits using cross-device attribution and privacy-safe data matching. Marketers often use CPA and ROAS alongside brand lift studies to get a full-funnel picture of performance.

What creative works best for CTV ads?

Lead with clear branding within the first few seconds. Keep messaging simple and legible on a large screen. Include a direct call-to-action-a URL, QR code, or memorable brand name. You can adapt existing TV spots for CTV content but consider enhancing them with interactive elements or stronger CTAs where supported. Share inbox share-worthy creative and people will remember you.

How does CTV fit with my other digital marketing channels?

CTV is typically strongest at driving upper- and mid-funnel impact-reach, awareness, brand lift-while reinforcing performance channels like search, social, and display. Coordinate your CTV creative and timing with campaigns on other channels, and use cross-screen attribution to understand the incremental reach and conversions CTV ads deliver to your overall media mix.