Companies

Cheetah Digital was an enterprise cross-channel customer engagement platform that helped brands build direct, loyalty-driven relationships with consumers through data, messaging, and personalization.

Cheil's India operating subsidiary. Expanded materially in October 2023 via the ₩7.3B acquisition of Mumbai-based influencer-marketing firm Digi-Influence. Source: alphabizkr (Cheil sustainability report secondary).

China-based joint venture serving as Cheil's principal operating arm in greater China, with offices in Beijing and Shanghai. Source: Cheil Sustainability Report 2014.

South Korea's largest advertising and marketing agency, founded January 17, 1973 as the in-house agency for Samsung Group. Listed on the Korea Exchange (KRX: 030000); Samsung Electronics holds ~28.4% as the largest shareholder, with National Pension Service at ~12%. World's 10th-largest agency network with FY2024 revenue of ₩4.34T (~$3.1B; +4.98% YoY) and 53 offices across 44 countries staffed by ~7,000 employees. Headquartered in Seoul. CEO Kim Jong-hyun (since December 2022). Samsung remains the anchor client; over-reliance on Samsung is documented as a qualitative strategic concern but no specific revenue-share percentage is publicly disclosed. Sources: Wikipedia + MarketScreener + Nasdaq.

Chemistry is an independent, full-service advertising agency that blends data-driven strategy with creative execution to help brands build meaningful connections with consumers.

CHEQ is an AI-powered cybersecurity company that provides a suite of solutions to protect businesses from online fraud, account takeover, and other digital threats.

Chewy's retail media network offering pet-focused advertising solutions to brands looking to reach highly engaged pet owners on the Chewy platform.

Chili Piper is a SaaS platform that automates meeting scheduling and lead routing for B2B sales teams, helping companies convert inbound leads faster.

Chitika was a search-targeted online advertising network that served billions of ads monthly to publishers outside of Google's ecosystem, specializing in intent-based display advertising.

Chocolate Platform is a social commerce and influencer marketing technology company that connects brands with content creators. The platform provides tools for influencer discovery, campaign management, and performance tracking with integrated e-commerce capabilities.

Choozle is a leading programmatic advertising platform that empowers digital marketers to plan, buy, and optimize digital ad campaigns across display, video, mobile, and social channels.

Choreograph is WPP's data company — formed April 2021 from the merger of Wunderman Thompson Data + GroupM MPlatform. Provides audience data, identity, and analytics infrastructure across all WPP agencies. Now part of WPP Media (post-2025 GroupM rebrand).

Chorus.ai is a leading conversation intelligence platform acquired by ZoomInfo that records, transcribes, and analyzes sales calls and meetings to help revenue teams improve performance.

ChurnZero is a leading Customer Success platform designed for subscription businesses to combat churn and drive growth. It provides a comprehensive suite of tools that enable customer success teams to understand customer health, automate personalized experiences, and engage proactively. The platform helps businesses manage the entire customer lifecycle, from onboarding to renewal, ensuring customers achieve value from their products.

Cimagine Media was an Israeli augmented reality startup that enabled consumers to visualize products in their real-world environments before purchasing, acquired by Snap Inc. in 2016.

Cincopa is a comprehensive digital asset management (DAM) platform that enables businesses to host, manage, and embed various media types like videos, images, audio, and documents. It provides customizable galleries, advanced analytics, and integrations to enhance online content delivery and engagement across websites and digital channels.

Cint is a global software leader in digital insights and research technology, connecting researchers with consumers through the world's largest consumer network for survey-based research.

Circana is a leading market research and analytics firm formed from the 2022 merger of IRI and NPD Group, providing consumer behavior insights and purchase data across retail and CPG industries.

CircleCI is a leading continuous integration and continuous delivery (CI/CD) platform that empowers software development teams to automate their build, test, and deployment processes. The company provides cloud-native developer tools that enable engineering organizations to release code with confidence and speed, reducing the time from commit to deployment while maintaining high quality standards. CircleCI's platform is designed to integrate seamlessly into modern development workflows, suppo...

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

Cisco Meraki provides cloud-managed IT solutions including wireless, switching, security, and IoT devices for simplified network management.

Cision is a leading PR and earned media software platform that helps brands monitor, analyze, and amplify their communications across global media channels.

Citizen Relations is a North American earned-media + PR agency, headquartered in Toronto with offices across Canada and the US. Originally part of the Vision7 group, transferred to BlueFocus in 2017 and divested to Plus Company in May 2021. Specializes in influencer + earned-media + brand PR. Sources: Plus Company portfolio + Citizen Relations.

CitrusAd is a retail media platform that enables retailers to monetize their digital properties through sponsored product ads, now operating as part of Publicis Groupe.