5 Top Programmatic AdTech Companies You Should Know in 2025

Buying advertising on the internet has changed dramatically in recent years. Previously, managers would call each other, agree on placements, and send creative materials by mail. Now, everything happens automatically, with algorithms buying and selling advertising space in milliseconds. The numbers are impressive too: in 2024–2025, the global market grew to $595 billion, and by 2028, it could reach $800 billion. This growth has led to an expansion of available platforms, from specialized niche solutions to comprehensive top 10 ad exchange company rankings. However, it is essential to choose the right technology services. When analyzing the market, we studied companies in terms of their technological capabilities, audience reach, inventory quality, and ability to adapt to industry changes. We also investigated the functionality of the best demand-side platforms and their integration capabilities.

1. SmartyAds

SmartyAds deservedly tops our ranking of top programmatic AdTech companies thanks to its comprehensive approach to programmatic advertising. The company develops a complete line of solutions for automating media buying and optimizing campaigns. Programmatic ad solutions of SmartyAds represent a platform that invests heavily in ML and AI. The result? Advertising campaigns can be better personalized and thus work more effectively. The company has established partnerships with over 25,000 sites around the world, from desktop websites to mobile apps. SmartyAds does quite well with real-time bidding, as their system participates in auctions with virtually no delay. They also offer advertisers detailed reports, so that you can track how a campaign is performing at every stage, from impression to click. A distinctive feature is its support for multiple formats, which provides flexibility in creating creative solutions:

• Video for maximum impact
• Banner for a broad reach
• Native ads for natural integration
• Rich media for interactive engagement
• Audio ads for new reach channels

SmartyAds adapts campaigns to different business sectors and customer needs.

2. The Trade Desk

The Trade Desk is one of the best programmatic advertising platforms specializing in the buyer side of the market. They have a lot to boast about, as their revenue is growing by 19-26% every year, and in 2025, the company was included in the S&P 500. Their strength is targeting. The Trade Desk knows how to work with primary customer data to create highly personalized ads. Besides, they keep up with trends and are actively developing Connected TV and audio ads. The company is also working on ads in retail media and commercial ads. What’s especially great about Trade Desk is that they have no hidden fees, and clients can improve the effectiveness of their campaigns by tracking actual purchases.

3. Google Ad Manager (DoubleClick)

​​Google Ad Manager remains one of the leaders among top SSP platforms because the service provides powerful tools for monetizing content. However, the main feature of the Ad Manager is its integration with Google’s extensive ecosystem and access to a comprehensive database of advertisers. ​​Like most platforms on our list, ​​Google Ad Manager provides pricing and revenue optimization algorithms to help publishers maximize their advertising revenue. Google also offers tools for audience segmentation and global targeting thanks to the best supply-side platforms technologies.

4. Amazon DSP

Amazon DSP is among the top DSP platforms, showing impressive growth in 2024–2025. According to Tinuiti, customer spending on Amazon DSP grew by 27% in 2024, while ad spending on Prime Video increased by 255%. All this, thanks to Amazon’s unique approach to consumer data that allows creating highly effective campaigns. The Amazon DSP offers tools for media ads, letting advertisers reach their customers when they’re ready to make a purchase. Amazon DSP also provides advanced attribution and conversion measurement capabilities, linking ad impressions to actual purchases.

5. PubMatic

PubMatic is an interesting player among SSP platforms, which in 2024 was recognized as a leader in the Forrester Wave report in the Sell-Side category. Over the past year, the company has shown a 9% increase in revenue, reaching $291.3 million. What sets PubMatic apart when evaluating the best ad networks for publishers?  There are two main things:

• It can process massive amounts of data using machine learning, helping publishers optimize their revenue.
• It supports major formats and provides publishers with detailed reporting on each placement.

PubMatic is actively developing mobile ads and video content, adapting to changes in how people consume media. The company works with 80% of the top 30 streaming publishers.

Conclusion

When choosing a technology partner, it makes sense to pay attention to more than just the functionality. Will their customer support help you figure out the settings? Are they honest in their pricing? Are there any hidden fees? Do the solutions fit your business goals? All these questions are essential if you want to find the right fit. The programmatic advertising market is not going to slow down. Companies that quickly master new technologies such as cookieless targeting and privacy-first approaches gain competitive advantages among top programmatic ad platform solutions. You just need to find the service that will keep up with the changes, and companies from our list have proved their worth over the years.