Top Illinois AdTech Companies (400)

OpenX is The Intelligent SSP™ (supply-side platform), simplifying advertising for marketers, advertisers, and publishers worldwide. As one of the largest SSPs globally, OpenX combines the industry’s only fully cloud-based infrastructure with leading AI capabilities to make digital advertising easier and more effective across every format, including CTV. Built to responsibly deliver quality, performance, and adaptability, OpenX makes digital advertising safer,...

Expedia Group, Inc. is the global travel marketplace with one purpose: to help travelers explore the world, one journey at a time. Expedia Group™ connects travelers, partners, and advertisers through its trusted brands, leading technology, and rich first-party data, delivering predictive, personalized experiences that shape the future of travel. Expedia Group’s ecosystem includes three flagship consumer brands – Expedia®, Hotels.com®, and...

Ahold Delhaize USA, a division of global food retailer Ahold Delhaize, is part of the U.S. family of brands, which includes five leading omnichannel grocery brands – Food Lion, Giant Food, The GIANT Company, Hannaford and Stop & Shop. Our associates support the brands with a wide range of services, including Finance, Legal, Sustainability, Commercial, Digital and E-commerce, Technology and...

Basis is a leading global provider of automation software designed specifically for enterprise marketers. Our platform, Basis, is the industry’s only comprehensive digital media solution that seamlessly integrates programmatic, site-direct, advanced TV, search, and social media within a single interface. By unifying these functions, Basis simplifies complex and disconnected media operations, automates repetitive tasks, and minimizes manual processes, enabling marketing...

Our mission is to improve health outcomes through behavior change at the point of care and beyond. Every day, people make choices that shape their health, and at PatientPoint, we strive to support those decisions with the right information delivered at the right time. We're proud to power the largest network of digital devices in doctor's offices across the country —...

We solve for advertising campaign and creative complexities - both key elements to the time/money savings and performance that brands, agencies and businesses seek. Our unified platform combines media, creative, and intelligence, offering end-to-end workflows powered by AI across the open and closed web. With over 700 brands and advertisers, we've proven that dynamic and personalized creative makes advertising impactful. We...

Taboola empowers businesses to grow through performance advertising technology that goes beyond search and social and delivers measurable outcomes at scale. Taboola works with thousands of businesses who advertise directly on Realize, Taboola’s powerful ad platform, reaching approximately 600M daily active users across some of the best publishers in the world. Publishers like NBC News, Yahoo, and OEMs such as Samsung,...

Attain is the most trusted and comprehensive source for permissioned, real-time purchase data in the United States. By connecting directly with over 10 million consumers, Attain delivers unmatched accuracy and scale across audience activation, insights, and in-flight optimization, and measurement, helping marketers tie every dollar of media to real-world sales outcomes. Attain’s portfolio of owned and operated apps, spanning financial...

At AdAction, we’re revolutionizing how brands connect with audiences through the power of mobile technology. As leaders in performance-driven marketing, we create innovative solutions that merge supply, loyalty, and rewards into seamless, mobile-first strategies. Our platform empowers brands and app developers to drive engagement, boost retention, and achieve sustainable growth by delivering personalized, reward-based experiences that foster genuine connections. With cutting-edge...

People Inc. is America’s largest digital and print publisher. Our 40+ iconic and fast-growing brands harness the best intent-driven content, the fastest sites, and the fewest ads to help nearly 200 million people every month, including 95 percent of US women, make decisions, take action, and find inspiration. People Inc. brands include PEOPLE, Better Homes & Gardens, Verywell, FOOD &...

OneIMS is a results-driven online marketing agency, specializing in lead generation and customer acquisition programs. We help growth-oriented businesses increase online visibility so they can reach and acquire new customers consistently. We have helped hundreds of clients achieve sustainable business growth. Our team of strategists is experienced in building marketing campaigns designed to attract new business systematically and predictably. Contact...

Struggling to drive sales? We help mid-market IT consulting companies to measure and generate qualified pipeline.

At 84.51° we use sophisticated tools, technology and data analytics to help retail partners develop, nurture and embrace customer-driven relationships. 84.51° is a retail data science, insights and media company. We help the Kroger company, consumer packaged goods companies, agencies, publishers and affiliated partners create more personalized and valuable experiences for shoppers across the path to purchase. Powered by cutting edge...

Padilla - PR, advertising, digital and social marketing, investor relations and brand strategy. Let us show you how to connect with purpose.

We’re Critical Mass. We are 2,000 inspired humans across 14 offices, setting the right path—not just the next one—for our clients, their customers, and our own colleagues. We work with the best, Apple, Adobe, BMW, Nike, Diageo, Airbnb, BNY and many more, to power connected ecosystems that make brands stand out by driving performance with data, technology, AI, creative and...

We design businesses and brands for a more human future

Endurance Marketing Agency providing digital marketing services to businesses of all sizes.

With AbelsonTaylor, ROI is what you’ll get. A Return On Imagination—through our expertise, insights, creativity, and strategy. Every discipline within our agency dreams up imaginative ways to transform brands and drive measurable market results.

About GroundTruth GroundTruth is the leading location-based marketing and advertising technology company. Brands, agencies, small businesses, and non-profits trust our performance-driven solutions to help them reach consumers during moments of intent that generate important business outcomes. GroundTruth’s suite of geo-contextual omnichannel products and services are available at scale through our self-serve advertising platform, managed services, and industry reseller partnerships. GroundTruth’s marketing...

Yahoo is a global media and tech company that connects people to their passions. We reach nearly 900 million people around the world, bringing them closer to what they love—from finance and sports, to shopping, gaming and news—with the trusted products, content and tech that fuel their day. For partners, we provide a full-stack platform for businesses to amplify growth...