The Best Video Advertising Platforms for Brands

The best video advertising platforms in 2026 aren’t one list, because CTV, online video, YouTube, and social media each run on different technology.

Key Highlights

• Video advertising platforms fall into five groups: programmatic DSPs, CTV specialists, walled gardens, video ad networks and SSPs, and curation layers.
• US digital video ad spend is on track to pass $80 billion in 2026, so the platform you choose decides where a lot of budget lands.
• DSPs give you the widest reach across CTV and online video from one buying seat.
• Walled gardens like YouTube and Meta offer scale and first-party data, but limited transparency outside their own walls.
• Supply quality matters as much as the platform, especially for premium CTV inventory.

Here’s how each group works, who leads it, and how to match one to your goals.

Where Video Ad Spend Is Going in 2026

Video is now the center of most brand media plans.

According to the IAB’s 2026 digital video ad spend report, US digital video ad spend will pass $80 billion this year, up 11%. Digital video is also expected to top 60% of total TV and video ad spend for the first time.

Spend is spreading across channels, too. The same report has social video growing 13%, outpacing CTV’s 11% growth for the first time.

What that means for buyers: no single video ad platform covers every screen well. Most brands end up using two or three.

Programmatic DSPs: The Widest Reach From One Seat

A video DSP (demand-side platform) lets you buy CTV, online video, and sometimes audio from one interface across thousands of publishers.

This is where most programmatic video advertising happens. You bring your audiences, set bids and frequency caps, and the DSP buys impressions in real time.

Leading video DSPs:

• The Trade Desk: the largest independent DSP, with broad CTV and online video access
• Google Display & Video 360 (DV360): strong for brands already using Google’s measurement and YouTube inventory
• Amazon DSP: pairs streaming inventory like Prime Video with Amazon’s shopping data
• StackAdapt: a self-serve option popular with mid-market brands and agencies

Best for: brands and agencies that want one place to plan, buy, and measure video across channels.

If you’re weighing DSPs side by side, our guide to media buying platforms compares them in more depth.

CTV Specialists: Built for the Living Room

CTV platforms focus on streaming TV inventory, often with household targeting and outcome-based reporting built in.

Some are self-serve tools from the streamers themselves, like Roku Ads Manager. Others are managed partners or CTV-focused DSPs that buy across many streaming apps at once.

Best for: brands that want TV-style reach with digital-style targeting and measurement.

We cover this group in detail in our roundup of the best CTV advertising platforms.

Walled Gardens: YouTube, Meta, and Social Video

Walled gardens sell video inventory only on their own properties, using their own first-party data.

• YouTube (Google Ads): the largest online video audience, with in-stream, Shorts, and CTV placements on the YouTube TV app
• Meta: video across Facebook and Instagram feeds, Stories, and Reels
• TikTok: short-form vertical video with strong reach among younger audiences

These platforms are easy to start with and offer huge scale. The trade-off is transparency: reporting stays inside each platform, so comparing results across channels takes extra work.

Best for: short-form creative, social-first brands and fast performance testing.

Video Ad Networks and SSPs: The Supply Side

Video ad networks and supply-side platforms (SSPs) sit on the publisher side of the auction.

SSPs like Magnite and PubMatic package publishers’ video inventory and make it available to DSPs. Video ad networks bundle inventory from many smaller sites and apps and sell it directly, usually at lower prices.

Most brands never log into an SSP. But the SSPs behind your DSP buy shape what you’re actually paying for, which is why buyers increasingly use deal IDs and curated supply instead of the open exchange.

Best for: buyers who want direct deals with specific publishers or low-cost reach through ad networks.

Curation Layers: Cleaner Supply for the Platform You Already Use

Curation platforms package premium inventory across multiple SSPs into private marketplace deals you activate in your existing DSP.

That’s where we work. Ichiro, our CTV curation platform, builds curated deals across SSPs with show-level and live sports signals added to each bid request. PubHub, our CTV planning platform, lets you build packages by audience, show, or live event and estimate reach before you commit.

Curation doesn’t replace your DSP. It improves what your DSP buys.

Best for: brands and agencies that want premium CTV supply without adding another buying platform.

How to Choose a Video Advertising Platform

Start with your goal, then match the platform type to it.

• Broad awareness across screens: a programmatic DSP, with curated CTV deals for premium inventory
• TV-style reach with targeting: a CTV specialist or CTV-focused DSP
• Short-form engagement and fast testing: YouTube and social walled gardens
• Low-cost online video reach: a video ad network

Then ask every platform the same questions:

• Inventory: which publishers and apps can I reach, and how directly?
• Data: can I bring my own audiences, and what targeting is built in?
• Measurement: how are reach, completion, and outcomes reported, and can I verify them?
• Fees: what’s the platform fee, and what do intermediaries take?

Our guide to choosing a programmatic advertising solution goes deeper on these questions.

Don’t Skip the Supply Path

The same CTV impression can reach your DSP through several resellers, each adding fees and fraud risk.

Video advertising companies differ less in their interfaces than in where their inventory comes from. Ask for app-level reporting, check sellers against each publisher’s app-ads.txt file and each SSP’s sellers.json file, and favor direct paths to publishers.

Our trader’s guide to supply path optimization explains how to cut wasteful paths, whichever platform you use.

The Bottom Line

The best video advertising platforms depend on where your audience watches and what you need video to do.

DSPs give you reach across screens, CTV specialists bring the living room, walled gardens own social and short-form video, and the supply side decides what you’re really buying. Most brands combine two or three, then hold every platform to the same standard for inventory quality and transparency.

Want premium CTV supply inside the DSP you already use? Talk to our team about curated deals for your next campaign.

Frequently Asked Questions

What is a video advertising platform?

A video advertising platform is software that lets brands buy, place, and measure video ads. It can be a DSP that buys across many publishers, a walled garden like YouTube that sells its own inventory, a CTV platform focused on streaming TV, or a video ad network that bundles inventory from many sites. Each type suits different goals and budgets.

What is programmatic video advertising?

Programmatic video advertising is the automated buying of video ad impressions through software, usually a DSP. Instead of negotiating each placement, buyers set audiences, bids, and budgets, and the DSP purchases impressions in real time across CTV, online video, and mobile. It can run in the open exchange or through private deals with specific publishers.

What is the difference between a video DSP and a video ad network?

A video DSP lets you buy inventory across many exchanges and publishers from one interface, with your own targeting and bidding. A video ad network bundles inventory from a group of sites and apps and sells it directly, often at lower prices but with less transparency. DSPs offer more control, while networks offer simplicity and cheaper reach.

Which video advertising platform is best for small budgets?

Self-serve platforms are usually the best starting point for small budgets. YouTube and social platforms let you launch with low minimums, and self-serve CTV tools like Roku Ads Manager or mid-market DSPs make streaming TV accessible without large commitments. Start with one platform, measure results, then add channels as you scale.