Companies

Rewards Network operates a dining rewards program that connects restaurants with customers through credit card-linked offers and loyalty programs.

AI-powered commerce platform; acquired digital-experience platform Crownpeak in December 2025.

RhythmOne — recorded in ATDb as the acquirer/parent of one or more AdTech companies (s375 lineage backfill).

RIB Software — recorded in ATDb as the acquirer/parent of one or more AdTech companies (s375 lineage backfill).

Rich Audience is a programmatic advertising platform offering both DSP and SSP solutions with focus on high-impact display and video formats. The company provides self-serve programmatic buying, private marketplace access, and advanced targeting capabilities for advertisers and agencies.

RichAds is a performance advertising network specializing in push notifications, popunders, and native ads with global traffic reach.

RichRelevance was a pioneering AI-driven personalization platform for retail and e-commerce, later rebranded as Algonomy after merging with Manthan in 2021.

Riddle is a no-code interactive content platform that enables brands and publishers to create quizzes, polls, surveys, and other engaging formats to drive audience engagement and first-party data collection.

Ring is Amazon's smart home security subsidiary — video doorbells, security cameras, alarm systems. Acquired by Amazon February 2018 for ~$1B. Material to Amazon's smart-home + retail-media play; subject to repeated privacy + law-enforcement-data-sharing controversies.

RingCentral is a cloud-based business communications platform providing unified communications, video conferencing, and contact center solutions.

Rise Interactive is a digital marketing agency specializing in data-driven marketing strategies, analytics, and media optimization across paid search, social, and programmatic channels.

Rithum is a global commerce technology platform formed in December 2023 from the unification of CommerceHub, ChannelAdvisor, Dsco, and Cadeera following a series of acquisitions consolidating ecommerce operations infrastructure. The platform processes $50B+ in annual GMV and manages $500M+ in digital marketing and retail media ad spend across the world's largest brands and retailers.

Rival IQ is a social media analytics and competitive intelligence platform that helps marketers track, analyze, and optimize their social media performance against competitors. It provides insights into content, engagement, hashtags, and audience growth across various social channels, enabling data-driven marketing decisions.

Riversand is a Master Data Management (MDM) and Product Information Management (PIM) platform provider, not primarily an AdTech company.

Rivery is an enterprise-grade, all-in-one data integration platform that simplifies the process of ingesting, transforming, and orchestrating data. It enables businesses to centralize data from various sources into data warehouses for advanced analytics, business intelligence, and operational use cases.

Machine-learning company acquired by Index Exchange June 8 2022 — IX's first acquisition. Tech integrated into IX bidding optimization.

Direct-to-consumer telehealth company that has expanded into brand advertising, leveraging digital health platforms and data-driven marketing.

Roar is a digital media and advertising technology company specializing in contextual advertising and content monetization solutions for publishers and advertisers.

Roblox's native advertising platform enabling brands to reach its massive Gen Z and Gen Alpha audience through immersive, in-experience ad formats within the Roblox metaverse.

Roboflow offers a comprehensive platform that streamlines the entire computer vision development lifecycle, from dataset management and annotation to model training and deployment. It empowers developers and teams to build and deploy robust computer vision models quickly and efficiently.

Marketing measurement and attribution platform that helps brands understand the impact of their marketing investments across channels.

Rocket Fuel (acquired by Sizmek) was an AI-powered programmatic media buying platform that used predictive algorithms for ad targeting and optimization. The company specialized in programmatic display, video, and mobile advertising.

Rocket Lab was a mobile app growth and user acquisition platform that helped developers and marketers scale their apps through data-driven advertising and performance marketing solutions.

RocketReach is a B2B contact data and intelligence platform that helps sales and recruiting professionals find verified email addresses, phone numbers, and social profiles.