8 Programmatic Advertising Trends: What to Watch for in 2026

Advertising

Programmatic advertising is heading into 2026 with more scale, more automation, and more pressure to prove what every dollar is doing. IAB’s 2026 Digital Video Ad Spend & Strategy Report projects that U.S. digital video ad spend will surpass $80 billion in 2026, while EMARKETER expects U.S. programmatic ad spending to top $200 billion this year. In other words, automated buying is no longer the new kid at the media plan table. It is the table.

The opportunity is clear, but so is the assignment. Marketers need cleaner data, smarter creative, better supply paths, stronger measurement, and a channel mix that can connect brand building to performance. These are the programmatic advertising trends to watch as budgets, buyer expectations, and consumer behavior continue to shift.

1. AI and Agentic Automation

Programmatic has always been built on automation, but 2026 is pushing that automation upstream. AI is moving beyond bid adjustments and budget pacing into planning, AI audience targeting, creative versioning, partner selection, and performance analysis.

The shift is already underway. IAB’s 2026 Outlook Study forecasts 9.5% year-over-year U.S. ad spend growth and notes that five of buyers’ top six focus areas are AI-driven. IAB State of Data 2025 also found that only 30% of agencies, brands, and publishers had fully integrated AI across the media campaign lifecycle at the time of the report, which leaves plenty of room for competitive advantage.

For marketers, the winning move is not “let AI handle it.” It is setting up AI to handle the repeatable work, then keeping humans in charge of the strategy, the guardrails, and the final call. Agentic tools can move fast, but brand safety, transparency, and business context still need a real owner.

2. Data Consolidation and Privacy Strategies

Signal loss is not a temporary inconvenience. It is the new operating environment. Browser changes, privacy regulations, platform restrictions, and consumer expectations are all pushing advertisers toward more durable data strategies.

That means marketers need to consolidate the data they already have before chasing the next workaround. Customer relationship management (CRM) data, site behavior, purchase history, creative engagement, contextual signals, and consented partner data should be organized into a usable system that supports audience targeting, suppression, personalization, and measurement.

The practical takeaway: privacy strategies cannot live in a legal folder somewhere. They have to be baked into how campaigns are planned and optimized. The strongest programmatic teams will know which data sources they can trust, what permissions apply, how each audience is built, and how performance will be measured when user-level signals are limited.

3. CTV and OTT Growth

CTV advertising remains one of the biggest stories in programmatic because it brings digital-style precision to the biggest screen in the house. Over-the-top (OTT) video refers broadly to video delivered over the internet, while Connected TV is the TV-screen subset that matters most for advertisers trying to combine premium viewing environments with measurable outcomes.

Digital video’s growth shows why this matters. IAB projects digital video will account for more than 60% of total TV/video ad spend for the first time in 2026. As ad-supported streaming, live sports, and premium video on-demand inventory expand, more TV budgets are becoming biddable, targetable, and measurable.

The challenge is fragmentation. Inventory, identity, creative specs, measurement, and frequency controls can vary across CTV platforms. Marketers should prioritize CTV partners that offer high-quality inventory, clear reporting, flexible targeting, and an attribution model that ties TV exposure to real business outcomes.

4. Commerce and Retail Media Expansion

Retail media is growing from a sponsored search play into a full-funnel programmatic channel. Retailers are using first-party shopper data to power ads across their owned sites, apps, physical stores, social platforms, the open web, and CTV.

The spend is following. EMARKETER estimates that U.S. advertisers spent $60.32 billion on retail media in 2025 and will spend $71.09 billion in 2026. That growth is not just about proximity to purchase. It is about closed-loop measurement: the ability to connect an ad exposure to an actual transaction.

Still, retail media needs a sharper evaluation lens in 2026. Marketers should ask how audiences are built, whether off-site inventory is transparent, which attribution window is being used, and whether incrementality testing is available. The channel can be powerful, but only when the measurement is as useful as the targeting.

5. Short-Form Video Dominance

Short-form video has become the creative format marketers cannot ignore. According to HubSpot’s 2026 marketing statistics, short-form video is the most leveraged media format among marketers and the top ROI-driving content format, named by 49% of marketers.

For programmatic teams, that creates two big opportunities. First, short-form video is a fast testing ground for hooks, offers, product claims, and audience angles. Second, it gives brands a steady stream of creative learnings that can be applied across CTV, retail media, display, and paid social.

But dominance does not mean every message should be squeezed into six seconds. The best brands will build modular creative systems: a strong opening, a clear problem, proof that the product helps, and a simple next step. Short-form video can find the angle. Other channels can give that angle more room to work.

6. Programmatic DOOH and Audio Advertising

Programmatic is also moving further into the real world and everyday routines through digital out-of-home (DOOH) and audio. These channels give marketers new ways to reach consumers beyond scrolling feeds and browser tabs.

DOOH is gaining flexibility as more screens become digitally connected. EMARKETER projects U.S. programmatic DOOH will reach $1.23 billion in 2026. Audio is moving too: IAB’s 2025 Internet Advertising Revenue Report found podcast advertising revenue grew 17.6% year over year in 2025 to $2.9 billion.

The creative rules are different here. DOOH needs instant clarity because people are moving. Audio needs strong scripting because there may be no visual backup. Both can be valuable additions to a programmatic plan, especially when they are tied to location, context, sequential messaging, or incremental reach goals.

7. Programmatic Curation and Transparency

Programmatic buying is getting more selective. After years of chasing scale through open exchanges, advertisers are putting more emphasis on curated supply paths, private marketplaces, and direct deals that offer better visibility into where ads run and how media dollars move.

That shift is showing up in the market. EMARKETER’s programmatic forecast says most automated ad buys are now transacted through direct deals. The reason is simple: marketers want the efficiency of programmatic without the fog that can come with too many intermediaries.

In 2026, transparency will mean more than a post-campaign placement list. Buyers will want to understand supply fees, inventory quality, brand suitability, audience construction, and performance by path. Fewer, cleaner routes to quality inventory can make programmatic easier to manage and easier to trust.

8. Evolving Measurement and Omnichannel Strategies

As programmatic expands across CTV, retail media, DOOH, audio, social video, and the open web, measurement has to evolve with it. Last-click reporting cannot explain a customer journey that may start with a streaming ad, continue with a retail media exposure, and end after a search click.

Marketers are still catching up. Nielsen’s 2025 Annual Marketing Report found that only 32% of global marketers say they measure media spending holistically across both digital and traditional channels. That gap matters because fragmented measurement can make strong channels look weak and over-credit the touchpoints closest to conversion.

In 2026, stronger measurement will likely combine platform reporting, conversion APIs, incrementality testing, marketing mix modeling, and clean-room analysis. The point is not to find one perfect metric. It is to build enough confidence to make better budget, audience, and creative decisions while campaigns are still live.

Why You Need Performance TV

Programmatic trends move fast, but the best ones all point in the same direction: smarter automation, stronger data connectivity, and better performance accountability. MNTN helps advertisers bring those trends to premium streaming advertising with AI-powered audience targeting, real-time optimization, and measurement tools built for modern media teams.

Here’s how MNTN Performance TV helps marketers stay ahead of programmatic advertising trends.

• MNTN Matched — AI-powered audience targeting helps advertisers build high-intent CTV audiences using keywords, shopping behavior, recent life events, and interest signals, making campaign strategy more precise from the start.
• Automated Optimization — MNTN optimizes campaigns throughout the flight using real-time data and performance goals, helping marketers improve efficiency without constant manual adjustments.
• Integrations and APIs — MNTN connects with analytics, attribution, BI, ecommerce, audience, and measurement platforms, helping teams keep CTV performance aligned with the rest of their programmatic stack.
• Reporting Suite — Real-time reporting gives advertisers visibility into metrics like revenue, CPA, conversions, creative performance, publisher performance, and cost per site visit, so performance trends are easier to act on.
• Premium CTV Inventory — MNTN gives brands access to Living Room Quality inventory through direct deals with premium streaming networks, helping programmatic CTV campaigns balance automation with placement quality.

Stay ahead of programmatic change with CTV built for measurable performance—sign up today with MNTN’s self-serve software.

Programmatic Advertising Trends: Final Thoughts

Programmatic advertising in 2026 will reward marketers who pair automation with discipline. AI, CTV, retail media, short-form video, DOOH, audio, curated supply, and omnichannel measurement all create new ways to reach high-value audiences and prove impact. The brands that win will not chase every trend. They will connect the right trends to clear business outcomes.