9 Best Retargeting Platforms: Overview, Comparison, and Features

Retargeting is a staple of digital advertising because, despite all the changes to the web over the years, it still works. 92% of consumers visiting a retailer's website for the first time aren't there to buy, and brands need a way to re-engage them.

With the phasing out of third-party cookies and the rise of AI-driven bidding, the best platform isn't about the biggest reach. This guide will show you what to look for in a modern retargeting platform, the types of platforms you can expect, and an overview of some of the best with their strengths and weaknesses.

What is a Retargeting Platform?

A retargeting platform shows digital ads to users who have previously interacted with a brand’s digital profiles. By using tracking pixels, mobile IDs, household identifiers, or customer lists, these platforms enable businesses to reconnect with prospects across the web, social media, and apps to boost conversions.

Unlike prospecting ads, retargeting focuses on users who are already aware of your brand, increasing touchpoints along the customer journey and engaging with high-intent shoppers.

The Types of Retargeting Platforms

To choose the right tool, understand first the primary ways ad spaces are bought and sold:

1. Demand-Side Platforms (DSPs)

DSPs let you buy space across millions of websites and apps. They offer the widest reach because they aren't tied to a single media owner.

Independent DSPs have a high degree of control for ad campaigns across the entire internet, and if you’re looking for a full-funnel platform that goes beyond a single channel or strategy such as retargeting, DSPs are the way to go.

• Example: AdRoll, The Trade Desk, StackAdapt.

2. Walled gardens

Walled gardens, by contrast, are closed ecosystems where the platform owns its own ad inventory and user data. The data and inventory they contain are usually not accessible to other platforms, compelling advertisers to choose their inventory if they prioritize a particular audience in that space.

Since walled gardens are limited to its own apps, they come with a couple of drawbacks. To start, walled gardens grade their own homework, so to speak. These platforms have a black-box nature to reporting and attribution. Their solitary nature also prevents them from integrating easily into other platforms to gain a holistic, omnichannel view of campaign performance or optimization.

• Example: Meta, Google, TikTok.

What to Look for in a Retargeting Platform

You have to weigh several factors in a retargeting platform to get your money’s worth. The biggest question is this:

• For every dollar I spend on retargeting with this platform, do I make more than a dollar back?

Advertisers’ biggest task is proving ROI. These six factors will improve your chances of seeing a larger return on investment.

1. Cross-channel attribution & reach

The modern customer journey is not linear. A user could see your ad on Instagram, click an email two days later, and finally buy after seeing a display banner on a news site. Customers have their consideration set before they reach the decision phase. 

So, how does your retargeting play into a multichannel strategy? Choose a platform that helps you shape cross-channel strategy and connect the dots between channels.

• Question to ask: Does the platform offer a unified view, or does it trap your data in a single silo?

• Why it matters: If you use separate tools for retargeting across channels, you risk double-counting conversions, misattributing conversions, or annoying customers with ads for products they’ve already bought.

2. AI-powered bidding 

These days, manual bidding means wasted spend. Modern retargeting platforms use machine learning to calculate the value of every single impression in real-time.

• Question to ask: Does the platform own its proprietary bidding engine (like AdRoll’s BidIQ)?

• The goal: The platform should automatically bid higher for users with high intent to purchase through analysis of intent data and demographic factors.

3. Support for cookieless tracking

With the phasing out of third-party cookies, your retargeting platform should be futureproof. 

Check that your chosen platform can use first-party data effectively. Ensure the platform can ingest your CRM data (from HubSpot, Salesforce, etc.) and use advanced identity resolution to find your customers across devices without relying solely on browser cookies.

Also, check that your platform is pioneering other retargeting tactics that don’t rely on cookies; for example, AdRoll works in Google’s Privacy Sandbox to activate cookieless audiences.

• Question to ask: What cookieless activation strategies can your retargeting platform employ?

4. Dynamic creative capabilities

Dynamic ads drive higher click-through rates because they automatically pull products from your store’s catalog to show users the exact items (including the right color and price) they were looking at.

Example of a dynamic ad with clickthrough carousel.

• Question to ask: Does the platform handle or support dynamic ad creation?

5. Transparency and brand safety

A good retargeting platform will offer you transparent reporting on which websites your ads appeared on. Avoid black-box platforms that give you a lump sum of impressions without showing you the specific domains or apps where your brand was featured. 

• Question to ask: What features do you have to ensure brand safety?

6. Multichannel orchestration and tech integration

With overcomplicated and ever-growing martech stacks, it’s important to find tools that already play with your software. 

Check for ecosystem fit: Does the retargeting platform integrate with your platform — e.g., for e-commerce, Shopify, Magento, WooCommerce? For B2B, can it integrate with Salesforce, HubSpot, G2, Outreach? Can it trigger retargeting emails alongside your display ads?

• Question to ask: Does this retargeting platform integrate with the tools I already use?

9 Best Retargeting Platforms Compared

Let’s break down the most popular retargeting platform choices and why they work.

Independent DSPs

1. AdRoll: The All-in-One Growth Platform

AdRoll is a full-funnel, multichannel advertising platform built for growth-minded marketers. AdRoll’s AI-powered advertising, with solutions for ecommerce, social media, account-based marketing, and cross-channel attribution, is proven to generate awareness, deepen interest and drive outcomes with tools for identifying the right audience. 

For B2B teams, AdRoll ABM extends these capabilities with account-based precision, multi-touch campaigns, and real-time buyer intelligence. 

AdRoll has nearly two decades of data and billions of intent signals under the hood, and it’s known as a staple DSP that’s been enabling retargeting since its inception.

• The multichannel advantage: Many platforms only show you a last-click view, ignoring the touchpoints along a customer journey. AdRoll provides a unified funnel view, allowing you to reach customers across 500+ ad exchanges and major social gardens (Meta, TikTok, Pinterest) simultaneously.

• The AI bidder edge: AdRoll’s proprietary AI engine, BidIQ, processes over trillions of intent signals daily to predict the exact value of an impression. BidIQ™ automatically bids higher for a user who just abandoned a $200 cart and lower for a casual browser. This "intelligence layer" ensures your budget is spent where it has the highest probability of conversion, effectively acting as a 24/7 media buyer for your brand.

• Privacy-first options: AdRoll allows you to sync your CRM (HubSpot, Salesforce, Shopify) to create high-precision audiences that don't rely on fragile browser cookies. Your retargeting remains stable and compliant even as privacy regulations and browser restrictions evolve.

• Powerful integration: AdRoll has dozens of integrations that act as an extension of your marketing stack. As some examples:

  • AR ABM integrations:

    • HubSpot

    • Salesforce

    • Marketo

    • Pardot

    • Oracle Eloqua

    • Drift

    • G2

    • Outreach

  • AR advertising integrations:

    • Shopify

    • Klayvio

    • WooCommerce

    • Meta

    • TikTok

    • Pinterest

    • Yotpo

    • HubSpot

    • Google Analytics

    • Constant Contact

    • GoDataFeed

2. Criteo

Criteo is another heavyweight retargeting platform, particularly for e-commerce brands. Criteo has pivoted its entire identity toward retail media, connecting a retailer's commerce signals with consumers for the purpose of advertising.

With a massive footprint in the retail sector, Criteo is the go-to choice for companies with massive product catalogs and significant monthly ad spend.

• Industry connections: Criteo has direct relationships with some of the world’s largest retailers, allowing your ads to appear on premium retail inventory that smaller DSPs may not access. The key here is that a lot of retailer websites on which Criteo ads appear are not open to programmatic.

• Criteo excels at lookalike retargeting — finding new users who exhibit the exact same purchasing behaviors as your previous customers based on its massive global data pool.

• Cookieless targeting for large volumes: Criteo invested in Commerce Max and OpenPass to combat the loss of third-party cookies. They use hashed email tracking and publisher integrations to maintain addressability. Though they’re effective, Criteo’s cookieless solutions perform best for large brands that already have a large volume of its own first-party data to feed the system.

• The black box reputation: Historically, Criteo was criticized for being a black box regarding where ads appeared and how Criteo spend is impacting advertisers’ campaigns.

• The complexity factor: Because Criteo is built for enterprise-level needs, the setup and management can be significantly more complex than self-serve platforms. It often requires a dedicated account manager or a specialized agency team to maximize its potential.

3. The Trade Desk

The Trade Desk is a leading independent DSP. TTD is designed for media buyers from large brands who want total control over their programmatic strategy.

• Proprietary AI bidder: In 2024 and 2025, TTD rolled out Kokai, an AI upgrade to their Koa engine. It analyzes over 15 million ad opportunities per second.

• Cookieless futureproofing: The Trade Desk is the creator of Unified ID 2.0 (UID2), an alternative to third-party cookies. To make UID2 work, you need high volumes of authenticated user data. 

• Enterprise fees: Premium inventory comes with premium fees. TTD’s pricing model is prohibitively expensive for brands with budgets under $20,000/month. 

• Enterprise complexity: TTD is notorious for its complexity, with many marketing teams having dedicated members managing the platform. For this reason, it’s usually recommended for enterprise brands.

• Strong integration: The Trade Desk is built to be an adtech hub. It integrates with almost every major data provider and CRM (like Braze or Salesforce).

4. StackAdapt

StackAdapt has gained a lot of traction since its founding in 2014. It is a self-serve DSP with hundreds of agency and brand customers.

In October 2025, StackAdapt launched a full martech suite — GA for all users — combining email marketing, first-party data activation, and programmatic in a single platform.

• Multichannel impact: StackAdapt offers display, native, video, CTV, audio, DOOH, in-game, and email channels. This makes it a top choice for cross-channel retargeting.

• Native ads: One of StackAdapt’s standout features is Page Context AI, which analyzes the contextual sentiment of a webpage to place better native ads that don’t rely on browser history.

• Growing global reach: StackAdapt operates across 19+ markets globally and continually improves its impressions and reach across global markets.

• Missing integrations: StackAdapt lacks some key integrations that ecommerce brands rely on. It doesn’t have the same native Shopify, WooCommerce, BigCommerce, Wix, or PrestaShop that some retargeting platforms offer.

5. ReTargeter

As its name might suggest, ReTargeter specializes in retargeting. It’s one of the oldest names in the space and positions itself as a full-service partner. 

• Cross-channel ads, with a measurement caveat: ReTargeter offers access to major display networks and can extend into social and search. However, ReTargeter’s cross-channel reach is often managed behind the scenes manually by their team. This creates a reporting lag.

• Cookie-free contextual targeting: ReTargeter has leaned heavily into contextual retargeting as a response to privacy changes, showing ads based on the content of the page rather than just user cookies. 

• Managed services: ReTargeter provides transparency by showing you exactly which networks your ads are running on. Because they are a managed service, you are often paying a higher price for transparency and customization. 

Walled gardens

6. Google Ads

Google Ads reaches users across the Google Display Network (GDN), which spans over 2 million websites and reaches 90% of internet users. 

However, remember Google is a walled garden. Its primary goal is to keep you spending within its own ecosystem.

• Google access: Retargeting with Google means you can use Gmail, search, and YouTube. You also get integration with Google Analytics.

• Google’s limitations: It’s hard to manage across non-Google platforms (like Meta or TikTok or email) without a third-party tool. In addition, users are beholden to Google’s Smart Bidding algorithm.

7. Meta Ads (Facebook & Instagram)

Meta practically coined the social media retargeting playbook. They’re still a staple in many advertisers’ strategies for good reason: combined, Instagram and Facebook have over 6 billion accounts.

• Retargeting with Andromeda: Andromeda is a high-speed AI retrieval engine that evaluates tens of millions of ad variations in milliseconds to find the perfect match for every individual user. It can scan 10,000x more ad variations than the previous system, allowing Meta to shortlist the most relevant ad for a user the moment they open the app.

• Attribution gaps: Like most walled gardens, Meta is blind to what goes on outside of its properties. If a customer sees your ad on Instagram, doesn't click, but buys via a Google search three days later, Meta’s reporting may show zero value. Advertisers have to use other tools to connect the dots.

8. TikTok Ads

TikTok is the rising star in digital commerce. With the launch of Smart+ Campaigns and the expansion of TikTok Shop, the platform is a powerhouse for retargeting.

• Customizable reengagement: TikTok can re-engage users based on their video interactions, such as "watched 50% of my previous ad" or "visited my TikTok Shop profile." 

• Short lifespan: Memory is short on TikTok, and ad fatigue is real. Ads have a short lifespan on the platform, so they require a lot of tweaking and creative refreshes.

9. LinkedIn Matched Audiences

Because LinkedIn has access to verified first-party data (job titles, company names, seniority), its retargeting is choice for B2B.

• Algorithm updates: With the 2026 360Brew algorithm update, LinkedIn favors authentic thought leadership. While the lead quality is high, the cost of entry is steeper than that of other platforms on this list.

• Targeted niche: If you retarget on LinkedIn, you already know you’re speaking to an audience of business professionals. Being able to target by title and seniority ensures you reach decision makers.

Conclusion: Which Platform Should You Choose?

It might make sense to go with the flashiest and most well-established retargeting platform, but the challenge is fragmented data across a martech stack. Choose a platform that connects with your existing tools and channels.

If you’re interested in trying AdRoll, we unify retargeting and maximize your ROAS through smarter AI-driven bidding. Request a demo with AdRoll today and learn how we can facilitate multichannel orchestration.

Last updated on March 30th, 2026.