Companies

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 advertising platform enabling brands to reach millions of users through immersive ad experiences within the Roblox metaverse gaming platform.

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 is a mobile app growth platform founded 2019 in Miami with offices across LatAm and Spain; acquired by MiQ in April 2026 to bolster mobile and in-app capabilities for MiQ's omnichannel proposition.

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

NYC-headquartered ecommerce-network leader founded 2012 by Bruce Buchanan. ~$3.5B private valuation. Closed $335M secondary January 2025 alongside mParticle merger. Real-time relevance + commerce monetization platform.

Roku is a leading streaming platform provider that has transformed how consumers access digital entertainment content. The company operates a dual-revenue business model, combining hardware sales of streaming devices and smart TVs with a robust advertising and content distribution platform. Roku's operating system powers millions of connected TV devices worldwide, creating one of the largest streaming ecosystems in the market. The company's platform serves as an aggregator for streaming serv...

Roku's self-serve performance advertising platform launched September 18, 2024. $500 minimum spend, Shopify integration, designed to onboard SMB and growth-marketer advertisers to Roku CTV inventory. Lower friction than working with Roku's traditional sales reps.

Roku's advertising platform that enables brands to reach streaming audiences across The Roku Channel and the broader Roku ecosystem through connected TV advertising.

Roku's branded content production division launched March 2021 — formed via Funny Or Die acquihire. Creates custom branded content for advertisers across Roku-owned properties (The Roku Channel, Roku Originals, etc.).

Roku's advertising platform enabling brands to run video ads across The Roku Channel and the broader Roku streaming ecosystem.

Roku Curate is Roku's data + audience curation product launched April 2026. Streamlines CTV advertising and data access for buyers. Rolls into Roku's ad-tech platform expansion alongside Roku Exchange (Nov 2025) and Roku Ads Manager (Sep 2024).