How CTV Ad Platforms Are Changing Digital Advertising

If you’re ready to run connected TV (CTV) ads but aren’t sure which platforms to use, you aren’t alone. The CTV advertising market is crowded with options, and each one promises something slightly different. Do you buy programmatically through a demand-side platform? Do you go to a publisher? What’s the difference, and why does it matter for your campaigns?

Here’s the thing: The CTV ad platforms you choose shape everything about your strategy, including how much control you have, which audiences you’re able to reach, how you measure success, and how efficiently you spend your budget. So, if you’re serious about getting CTV right, it pays to know what CTV advertising platforms are out there and how they all fit together. Let’s break it down.

What Is Connected TV?

Connected TV is what happens when streaming services meet the big screen — no cable box, no broadcast tower, and no waiting for your show to start at 8pm sharp. Instead, viewers get all the on-demand convenience of the internet delivered right to their living room TV.

Here’s the simplest way to understand it: If you’re watching something on a TV screen, and it’s coming through an internet connection rather than a cable wire or antenna, that’s connected TV. Whether you’re binge-watching a series on your Roku-enabled smart TV, catching up on sports with your Amazon Fire TV Stick, or streaming a movie on Apple TV, they’re all part of the CTV ecosystem. The “connected” part simply means your TV is hooked up to the internet, turning what used to be a one-way broadcast receiver into an interactive streaming portal.

CTV vs. OTT

If you’ve spent any time researching CTV, you’ve probably come across the term “OTT.” OTT stands for “over-the-top,” which refers to any video content that streams over the internet instead of through traditional cable, satellite, or broadcast channels. The thing to know about OTT is that it’s device-agnostic. Whether you’re watching Netflix on your phone during a lunch break, catching up on YouTube on your laptop, or streaming Hulu on your smart TV, that’s all OTT. 

CTV, on the other hand, is much more specific. It only refers to streaming that happens on a television screen, meaning that all CTV is OTT, but not all OTT is CTV. This distinction matters because the viewing experience between the two is fundamentally different. If someone’s watching on a TV, they’re usually settled in, potentially with other people around them, and giving the screen their full attention (or at least more of it). When they’re on a mobile device, they’re more likely to be on the go, multitasking, or casually scrolling. Understanding where your ad is actually being seen helps you tailor your message to match the moment. 

How CTV & OTT Differ From Linear TV

Linear TV is the old guard. It’s what your parents grew up with and what some people still swear by for major events such as the Super Bowl (though even that’s streaming on Peacock). With linear TV, content is broadcast on a set schedule, and everyone watching at that moment sees the same thing at the same time. It’s a shared experience, which has its charm, but it’s also rigid. Missed the start time? Too bad. Want to skip the commercials? Better hope you recorded it on your DVR.

CTV and OTT flip that model on its head. Viewers can choose what they want to watch, when they want to watch it, and where they want to watch it. And instead of a broadcast signal simultaneously going out to millions of homes, each viewer’s stream is individually served to their device. 

From an advertising perspective, this approach is more precise. The ad served to each viewer can be different, even if they’re watching the same show. That’s because ads are inserted dynamically and selected in real time based on targeting criteria such as location, viewing behavior, or audience demographics. CTV and OTT also open new doors for engagement. Unlike linear TV, which is passive, advertisers can use QR codes, clickable overlays, and companion experiences that let viewers take action without ever leaving their couch.

Last — though certainly not least — is measurement. Estimates for linear TV are based on roughly how many people watched a program; you don’t get impression-level data or insight into who those people were. With CTV and OTT, estimates are far more granular.  You can track at the device level, see who watched your ad all the way through, and even connect that exposure to downstream actions such as website visits or purchases. It isn’t perfect, no measurement system is, but it’s a massive leap forward in accountability. 

3 Reasons CTV Is on the Rise

So, what’s pushing viewers (and advertisers) away from linear TV and toward CTV?

First, people aren’t watching TV the way they used to. Streaming now owns 47.5% of total U.S. TV viewing — the biggest slice it’s ever claimed, according to Nielsen. Meanwhile, broadcast and cable are splitting the leftovers at 21.4% and 20.2%, respectively. That’s a pretty clear signal about where audiences have moved, and advertisers aren’t the type to hang around an empty room.

Second, there’s actually inventory to buy now.  A few years ago, ad-supported streaming was still finding its footing. Today, it’s everywhere. Nielsen reports that 72.4% of overall TV viewing in Q1 2025 happened on ad-supported platforms, compared to just 27.5% on ad-free ones. That means CTV isn’t some experimental bet anymore; it’s legitimate, scalable inventory that can compete with traditional TV buys.

Third, advertisers are voting with their wallets. Comscore reports that 58% of media buyers plan to increase their programmatic investment in 2026, with CTV expected to capture 26% of media budgets on average. CTV has gone from an interesting opportunity to a core video strategy, giving brands the scale and impact of TV advertising without locking them into a rigid broadcast schedule. 

What Is CTV Advertising?

CTV advertising is the practice of running video ads within streaming content on television screens. Unlike traditional TV advertising, where you buy a time slot and hope that the right people tune in, CTV advertising uses internet delivery to target specific households based on who they are, what they watch, and where they live. It’s TV advertising reimagined for a world where viewers control the remote and advertisers control the targeting. 

Here are just a few of the benefits of CTV advertising:

• Precision targeting without sacrificing scale: CTV lets you narrow in on the households most likely to care about your message, whether that’s by geography, viewing behavior, or audience demographics, while still reaching millions of people. You’re don’t have to choose between broad reach and tight targeting, because you get both.

• Better use of creative assets: Most CTV ads are full-screen video, which means you can repurpose your existing TV creative or adapt what you’re already running on other video platforms. No need to reinvent the wheel or produce entirely new assets just to get into the streaming space. If you’ve got strong video content, you’ve got a head start.

• Clearer performance visibility: CTV platforms give you impression-level reporting, completion rates, and often the ability to connect ad exposure to website visits or conversions. You aren’t flying blind the way you might with a traditional TV buy. You can see what’s working, what’s not, and adjust accordingly — sometimes even mid-campaign.

• Access to premium, high-attention inventory: CTV ads run in full-screen environments where users are actively engaged with content they chose to watch. That’s a different context than other OTT formats, where your content might be a banner ad someone scrolls past or a pre-roll they skip after five seconds.

• Flexibility in budget and buying approach: Whether you’re working with a five-figure test budget or a seven-figure media plan, CTV has options. Programmatic buying makes it accessible at lower minimums, while direct buys give you premium placement and guaranteed delivery if you have the budget for it. We get into the specifics of both options in the next section.

• Household-level reach that complements other channels: CTV is often a shared viewing experience, which means your ad might reach multiple people in a single household. That’s valuable for products or services with broad household appeal, and it plays nicely alongside mobile or desktop campaigns where you’re reaching individuals one-on-one.

Best Practices for CTV Advertising

Running CTV ads isn’t rocket science, but there are a few things to keep in mind if you want your campaigns to perform well:

• Keep your message clear and front-loaded. Viewers can’t skip most CTV ads, but that doesn’t mean they’re hanging on every word. Lead with your strongest message, make your value proposition obvious within the first few seconds, and don’t bury the lede. If someone zones out halfway through, they should still know what you’re selling.

• Design for the big screen (and for sound-off viewing). CTV ads play on TVs, which means you’ve got room to work with visually. Use that space. At the same time, a surprising number of viewers watch with the sound down or off entirely, so make sure your visuals can carry the story. Text overlays, clear branding, and strong imagery go a long way.

• Optimized for completed views, not just impressions. Completion rate matters in CTV. If people are dropping off before your ad finishes, that’s a signal that your creative isn’t holding their attention. Test different cuts, try varying your pace, and watch your completion metrics closely. A completed view is worth a lot more than an impression that fades into the background.

• Match your creative to the context. Not all streaming environments feel the same. An ad that works during a cooking show might not land the same way during a thriller. Think about the mindset of your audience based on what they’re watching, and tailor your tone accordingly. You don’t need a different ad for every show, but you should be thoughtful about where your message shows up.

• Test, learn, and iterate. CTV gives you the data to know what’s working, so use it. Run multiple creative variations, test different audience segments, and don’t be afraid to kill underperforming ads mid-flight. The whole point of CTV advertising — specifically, programmatic CTV — is that you can optimize as you go, so treat your campaigns like living things, not set-it-and-forget-it buys.

• Don’t forget to follow through. A CTV ad often marks the beginning of a customer’s journey, not the end. Make sure you have a plan for what happens after someone sees your ad, whether that’s retargeting them on other devices, driving them to a landing page, or reinforcing your message with display or social media. CTV works best when it’s part of a broader strategy.

• Pay attention to frequency. No one likes spam, so hitting the same household with your ad ten times in one sitting isn’t a strategy; it’s just annoying. CTV platforms offer frequency controls for a reason. You want enough repetition to build familiarity without crossing the line into ad fatigue.

Programmatic vs. Direct Buying

When it comes to buying CTV ads, you’ve got two main paths: programmatic and direct. Both get your ads on screen, but they work in fundamentally different ways and serve different needs.

Direct buying is the straightforward option. You work directly with a publisher to negotiate a deal for ad inventory. You agree on pricing, lock in specific placements, and know exactly where your ads will run. Direct deals give you control and predictability because you’re buying premium inventory in known environments, often with guarantees around delivery and placement.

If you want your ad to run during a specific show or event, or if you need to ensure you’re appearing in a brand-safe context with zero ambiguity, direct buying is usually the way to go. The only trade-off is that it requires larger budgets and longer lead times, and you’re working with one publisher at a time, which means reaching scale often means cutting multiple deals. 

With programmatic buying, rather than negotiate directly with publishers, you use technology platforms to bid on ad inventory in real time across many different streaming services at once. When a viewer triggers an ad break, your bid is evaluated against others and, if you win, your ad is served — all in milliseconds. 

Programmatic buying is built for efficiency and scale. You can reach audiences across dozens of apps and services without negotiating individual contracts, and you can adjust your targeting, creative, and budget on the fly based on what’s performing. It’s also more accessible from a budget perspective, with lower minimums than most direct deals. The only downside is that you give up some control. You might not always know exactly where your ad appeared. While programmatic platforms have come a long way on transparency and brand safety, you’re still relying on algorithms and bidding dynamics rather than a preexisting agreement.

So, which one should you use? It depends on what you’re optimizing for. If your priority is premium placement, brand alignment, or sponsorship-style opportunities, direct buying gives you the certainty and control to make that happen — if you have the budget to support it. If you’re focused on performance, audience reach, and the flexibility to test and optimize quickly, programmatic is your best bet. And, in many cases, the smartest approach is a mix of both. 

The Programmatic Buying Ecosystem

Programmatic buying might seem like magic. Your ad shows up in front of the right person at the right time, all handled by software in the blink of an eye. But there’s a whole ecosystem of players working behind the scenes to make it happen. Here’s who does what:

• Supply-side platforms (SSPs) represent the publishers. If you’re a streaming service with inventory to sell, an SSP is your storefront. It connects your available ad slots to the broader programmatic marketplace, packages your inventory, sets floor prices, and manages rules around who can bid and what can run. SSPs are the bridge between content owners and the ad exchanges where buying happens. 

• Demand-side platforms (DSPs) represent the advertisers. This is where you, as the buyer, go to set up campaigns, define your targeting, upload creative, and manage your bids. A DSP connects you to multiple ad exchanges at once, giving you access to inventory across a wide range of publishers without needing to negotiate with each one individually. It’s your control center for programmatic buying, and the better the DSP, the smarter your bidding and optimization will be.

• Ad exchanges are the marketplaces where the actual transactions take place. SSPs bring inventory to the exchange, DSPs bring advertiser demand, and the exchange facilitates the auction. When a viewer hits an ad break, the exchange evaluates all the bids in real time and determines which ad wins the slot. It’s fast, automated, and built to handle massive scale.

• Data management platforms (DMPs) handle the audience data that makes targeting possible. DMPs collect, organize, and activate data from various sources — first-party data from your customer relationship management (CRM) system, third-party audience segments, behavioral signals, and more. They help you build and refine audience segments, so you aren’t just buying impressions at random, but actually reaching people who match your ideal customer profile. DMPs are the engine behind the “right person” part of programmatic’s promise.

• Measurement and verification vendors are your accountability layer. They track whether your ads actually ran where they were supposed to, confirm that real people (not bots) saw them, measure viewability and completion rates, and validate brand safety. In a programmatic environment, where you’re buying across multiple publishers and platforms, these vendors give you the transparency and verification you need to trust that your budget is being spent wisely.

Together, these players create a system where publishers can monetize their inventory efficiently, advertisers can reach their target audiences at scale, and the whole thing runs fast enough to make decisions in real time.

What Is a CTV Ad Platform?

A CTV ad platform is the tool advertisers use to actually buy, launch, and manage their CTV campaigns. Think of it as your command center, where you set up targeting, upload creative assets, manage budgets, place bids, and track your performance across streaming inventory. CTV advertising platforms are essentially DSPs that either specialize in CTV or have built-in CTV capabilities. They connect you to ad exchanges and publishers, so you can access inventory from multiple streaming services without having to negotiate individual deals with each one.

But access is just the beginning; a CTV ad platform’s real value is its control and intelligence. A good CTV ad platform enables you to define your audience with precision, optimize bids in real time, manage frequency caps, and pull reporting that actually tells you what’s working. Some platforms are better suited for programmatic buying across a wide range of publishers, while others give you more direct access to specific streaming ecosystems or premium inventory. Which one you choose will depend on your goals, budget, and what kind of inventory you need to reach.

Top CTV Advertising Platforms for 2026

The CTV ad platform you choose should align with your campaign goals, budget, where your audience spends their time, and what kind of inventory you need to reach. Some advertisers run everything through a single DSP for simplicity and cross-channel optimization. Others use a mix of programmatic platforms for broad reach and performance, and direct tools for premium placements or audience-specific targeting. 

There’s no one-size-fits-all answer, but understanding what each platform brings to the table helps you make smarter decisions about where to invest. Here are some of the most widely used CTV advertising platforms, and what sets each one apart:

• StackAdapt is a full-service DSP with strong CTV capabilities. It’s built for programmatic buying across multiple channels — CTV, display, native, and video — so if you’re running an integrated campaign, you can manage everything in one place. Known for its user-friendly interface, robust audience targeting options, and detailed reporting, StackAdapt is a solid choice for brands that want flexibility, transparency, and the ability to test and optimize quickly without needing a massive budget to get started.

• The Trade Desk is one of the largest and most established DSPs in the programmatic space and is a go-to for CTV buying at scale. It offers access to a massive range of inventory across premium publishers and streaming platforms, along with sophisticated targeting and measurement tools. The Trade Desk is a strong option if you need enterprise-level scale, want access to exclusive inventory deals, or are running complex, data-driven campaigns. It’s more commonly used by agencies and larger advertisers and requires a bigger budget and more technical know-how than some other CTV ad platforms.

• Amazon Ads gives you programmatic access to Amazon’s own streaming inventory, namely Prime Video, Freevee, and Twitch, as well as third-party CTV inventory beyond Amazon’s ecosystem. The big advantage here is Amazon’s first-party shopping and behavioral data, which is powerful for targeting and measurement, especially if you sell on Amazon or want to connect ad exposure to purchase behavior. It’s a good fit for eCommerce brands and anyone looking to tap into Amazon’s audience insights.

• Walmart Connect operates similarly to Amazon Ads but within Walmart’s ecosystem. You get access to Walmart’s streaming properties (such as their partnership with Roku and Paramount+) and the ability to target based on Walmart’s shopper data. Like Amazon, the data is the real differentiator. If your customers shop at Walmart, you can use purchase behavior to inform your CTV targeting and measure the impact of your ads on in-store and online sales, which is particularly useful for consumer packaged goods brands and retailers. 

• MNTN is a performance-focused CTV platform built specifically for direct-response advertisers. Unlike traditional DSPs that rely heavily on awareness and reach, MNTN is designed to drive measurable actions, such as site visits, sign-ups, and purchases. It offers features such as automated creative optimization, detailed conversion tracking, and a more accessible pricing model for smaller budgets. If your goal is performance rather than branding, and you want a platform that’s purpose-built for that, MNTN is worth a look.

• Google Display & Video 360 (DV360) is Google’s enterprise DSP, and it includes robust CTV buying capabilities alongside display, video, and other formats. DV360 gives you access to YouTube’s CTV inventory, as well as third-party publishers. It integrates directly into Google’s broader stack, which is helpful if you already run search, YouTube, or display ads through Google. DV360 is best suited for larger advertisers or agencies managing complex, multi-channel campaigns.

• Roku Ads Manager is Roku’s self-serve platform for buying ads directly on Roku devices and the Roku Channel. It’s not a DSP in the traditional sense but rather a direct buying tool that gives smaller advertisers an accessible entry point into CTV without needing to go through a third-party platform. You get access to Roku’s first-party audience data and the ability to target based on streaming behavior. If your audience skews heavily toward Roku users and you want simplicity and control, it’s a straightforward option.

• Paramount Ads Manager works similarly to Roku Ads Manager but for Paramount’s streaming properties, including Paramount+ and Pluto TV. It’s another direct buying option that gives you control over placement and access to Paramount’s first-party data. It’s a solid option if you want to align your brand with specific Paramount content or if you’re targeting audiences that over-index on their platforms.

Where Does OTT Fit in the Picture?

When we talk about CTT advertising platforms, we’re really talking about platforms that can buy both CTV inventory (TV screens) and OTT inventory (mobile, tablet, and desktop). Most of the major DSPs we covered, including StackAdapt, The Trade Desk, and DV360, don’t just limit you to the big screen. They let you extend video campaigns across all of those devices, which means you can reach the same person whether they’re watching on their couch or scrolling on their phone. That cross-device capability is one of the reasons these platforms are so central to modern video advertising. You aren’t forced to choose between CTV and OTT; you’re using the same tools to buy both.

The strategic question isn’t whether to include OTT, but how to use it alongside CTV. Some advertisers treat CTV as the anchor and use OTT on smaller screens for retargeting or frequency management. Others run integrated campaigns where the message adapts based on the device and context. Either way, CTV advertising platforms are built to handle both, which gives you flexibility in how you allocate budget and structure your audience strategy. 

Watch out for Walled Gardens

Not all CTV and OTT inventory is created equal, and not all of it is accessible through the open programmatic ecosystem.

Some of the biggest players, including YouTube, Netflix, Amazon, and Hulu, operate as walled gardens, meaning their inventory is only available through their own proprietary platforms. If you want to run ads on YouTube, you’re buying through Google Ads or DV360. If you want Netflix or Amazon Prime Video, you have to go through their direct sales teams or their own DSPs. You can’t access that inventory through a third-party DSP in the same way you can with open-exchange inventory.

This matters because walled gardens control the data, the targeting, the measurement, and the reporting. You have to play by their rules, using their tools, and working within their definitions of success. That isn’t necessarily a bad thing, after all, these CTV ad platforms have massive reach and sophisticated targeting capabilities. However, it does mean you lose some of the standardization and transparency you get with open programmatic buying.

If you’re running campaigns across multiple walled gardens, you might be managing multiple dashboards, reconciling multiple sets of metrics, and stitching together reporting manually. It’s manageable, but it’s something to plan for. 

Make Vital Your CTV Advertising Partner

At Vital, we run CTV campaigns end-to-end using CTV ad platforms such as StackAdapt to access premium inventory across the streaming ecosystem. We handle everything from audience strategy and creative development to conversion tracking and performance reporting, so you can focus on running your business while we make sure your ads reach the right households and drive real results. Whether you’re testing CTV for the first time or scaling up an existing program, we have the tools, the expertise, and the proven experience to make it work.

Ready to get started? Contact us today to launch your next campaign.