Marketing Agency

Accenture Song is the creative transformation and digital agency arm of the global consulting firm Accenture, bringing together expertise across multiple disciplines to help brands develop outstanding digital experiences.

Aegis Group was a publicly traded holding company for a global group of media specialists, purchasing advertising space across newspapers, magazines, television, radio, and other outlets, while also providing extensive audience forecasting research.

Dentsu Inc., now operating as Dentsu Group Inc., was a Japanese international advertising and public relations company headquartered in Tokyo, which reorganized into a holding company structure effective January 1, 2020.

GroupM, now rebranded as WPP Media, was a U.S.-based media business owned by the multinational holding company WPP plc and was the world's largest media buying agency as of 2023.

J. Walter Thompson, which ultimately became part of VML following a series of mergers, was an advertising holding company incorporated in 1896 that grew into one of the most influential agencies in the world before being merged with Wunderman to form Wunderman Thompson in 2018, and then combined with VMLY&R to create VML in 2023.

Mediacom was a global media agency that merged with Essence in January 2023 to form EssenceMediacom.

Omnicom Group is an American multinational holding company specializing in media, marketing, and corporate communications.

Publicis Groupe is a French multinational advertising and public relations company that, as of 2024, ranks as the largest advertising company in the world by revenue.

WPP plc is a British multinational holding company specializing in communications, advertising, public relations, technology, and commerce, recognized as the world's largest advertising company as of 2023.

360i, now operating under the Dentsu Creative banner, was a New York City-based digital agency founded in 1998 in Atlanta as a search engine marketing and technology company.

72andSunny is a global creative advertising agency, founded in 2004, that specializes in brand transformations and culturally-led marketing campaigns combining entertainment and advertising.

Accenture is a consulting-rooted firm whose marketing arm, Accenture Song, has grown into an operation comparable in scale to the largest advertising holding companies.

Accenture Interactive, now operating as Accenture Song, was a global marketing agency that designed, built, communicated, and ran customer experience programs for clients around the world.

AKQA is a full-service digital experience design, development, and communications agency owned by WPP.

Anomaly is a global creative and business-problem-solving firm, established in 2004, that operates on the principle of going beyond traditional advertising to deliver solutions across whatever disciplines a client's challenge demands.

BBDO is a worldwide advertising agency network headquartered in New York City that works with major brands to develop iconic campaigns designed to move business and connect with consumers.

BBH (Bartle Bogle Hegarty) is a global creative company that helps brands differentiate themselves in competitive markets.

BCW (Burson Cohn & Wolfe), now operating as Burson, was a global public relations and communications firm headquartered in New York City, created in February 2018 when parent company WPP Group PLC merged its subsidiaries Cohn & Wolfe and Burson-Marsteller.

Cultural-marketing agency acquired by Publicis Groupe April 2026 (closing). Focused on sports + entertainment sponsorship + cultural relevance.

3Q Digital is a performance-driven digital marketing agency specializing in paid search, social, and programmatic advertising for high-growth brands and enterprises.

ADK Marketing Solutions is a Japanese integrated marketing and advertising agency offering digital advertising, creative, and data-driven marketing services across multiple channels.

ADK Media is a Japanese integrated advertising and marketing group offering end-to-end media planning, buying, and digital advertising solutions across Asia-Pacific markets.

Allison Worldwide is a global independent public relations and integrated communications agency helping brands navigate earned media, reputation management, and strategic communications.

Amazon Ads' in-house creative agency, present in 17 countries globally; multi-Cannes-Lions winner. Distinct creative-services business unit within Amazon Ads.

AMV BBDO is one of the UK's most celebrated creative advertising agencies, known for iconic campaigns across major consumer brands and a consistent record of industry awards.

Asatsu-DK (ADK) is Japan's third-largest advertising agency, offering integrated marketing, media buying, and digital advertising services with strong ties to the anime and entertainment sectors.

Assembly is the global media agency under Stagwell Inc., formed by merging Assembly + ForwardPMX into a single integrated media-buying and planning network. ~1,900 employees across 30+ offices in 20+ countries. Distinct from Assembly Industries (the Advent-backed e-commerce software platform that acquired Pacvue in 2021) despite the shared brand name.

AdParlor is a full-service digital advertising agency specializing in paid social media advertising across platforms like Meta, TikTok, Snapchat, and Pinterest. They provide campaign management, creative services, and performance optimization for brands and agencies. The company combines strategic planning with hands-on execution for social media advertising campaigns.

Adsmovil is the #1 Hispanic mobile ad network, MBE-certified, founded 2010 in Miami; its LatAm business was acquired by MiQ in March 2026 while the US business remains independent under founder Alberto Pardo.

AffiliateManager.com is a specialized full-service affiliate program management agency that serves as a strategic outsourcing partner for brands seeking to establish, scale, and optimize their affiliate marketing initiatives. The company provides comprehensive end-to-end management services that eliminate the need for brands to build in-house affiliate marketing expertise, offering dedicated account management, affiliate recruitment and vetting, performance optimization, compliance monitoring...

Experiential and creative production agency within the Havas Creative Network. Formerly known as Annex88.

APCO Worldwide is a global public affairs and strategic communications consultancy helping corporations, governments, and organizations navigate complex reputational and policy challenges.

Media network within Havas Media Group with international footprint.

US-based creative ad agency headquartered in Boston.

New Zealand-based marketing and communications services holding company. Acquired Deutsch New York and Hill Holliday from Interpublic Group (IPG) in January 2024.

Spotify's in-house music consultancy for brands, launched February 2024. Pairs brands with artists/genres for campaigns; clients include Coca-Cola Coke Studio, Visa, Kona Big Wave. Operates under Spotify Advertising.

Adswerve is a digital marketing and analytics consultancy specializing in Google Marketing Platform, cloud data solutions, and marketing technology implementation.

Berlin digital agency acquired by IBM April 2016 and rebranded as IBM iX Berlin. The legal entity continues as "IBM iX Germany GmbH" but the Aperto brand is sunset. Sources: IBM newsroom acq announcement + 2018 joint Aperto/ecx.io rebrand announcement.

Bain & Company is a global management consulting firm, not primarily an AI/ML platform as described. Founded in 1973, Bain is one of the "Big Three" management consulting firms alongside McKinsey and BCG. The firm provides strategic advisory services to executives and boards of major corporations, private equity firms, and other organizations across various industries worldwide. Bain is known for its results-oriented approach and long-term client relationships. While Bain does leverage advan...

Boston Consulting Group is a global management consulting firm that provides advisory services to companies in the AdTech Platform space, helping them navigate the complex digital advertising landscape.

Breadnbeyond is a video production agency specializing in animated explainer videos, product demos, and marketing videos for businesses.

Multicultural marketing and culture agency that joined the unified Media.Monks brand in August 2021 as part of the consolidation of all 24 S4 Capital operating companies. Media.Monks rebranded to Monks in July 2024. Historical brand: search now resolves to Monks.

ConversionAdvocates is a leading Conversion Rate Optimization (CRO) agency based in London. They specialize in helping businesses improve their website's performance and revenue by implementing data-driven strategies to enhance user experience and conversion rates across various digital platforms.

Deloitte is a global professional services firm with over 180 years of history whose core purpose is to make an impact that matters for clients, people, and communities.

Düsseldorf digital agency acquired by IBM March 2016 and rebranded into IBM iX. Brand sunset in joint 2018 announcement with Aperto. Sources: IBM newsroom acq announcement + 2018 joint rebrand.

adam&eve\TBWA (formerly adam&eveDDB) is a leading UK-based creative advertising agency known for iconic campaigns, including the John Lewis Christmas ads, now operating within Omnicom's TBWA Worldwide network.

ADK Holdings is a major Japanese integrated advertising and marketing communications group offering full-service agency, digital media, and content solutions across Asia.

Allied Sports is a sports marketing agency specializing in sponsorship consulting, activation, and branded content strategies for brands seeking to leverage sports partnerships.

Avenue A was a pioneering digital advertising agency and ad management platform that became one of the largest interactive agencies in the early 2000s before being rebranded as Razorfish.

Blue State is a digital engagement agency that helps progressive causes, nonprofits, and mission-driven organizations build movements, raise funds, and drive advocacy through data-driven digital strategies.

Brunswick Group is a global strategic advisory and communications firm specializing in critical issues, reputation management, and stakeholder engagement for major corporations.

BSSP (Butler, Shine, Stern & Partners) is an independent, full-service advertising agency based in Sausalito, CA, known for bold creative work and integrated brand-building campaigns.

Bully Pulpit Interactive (BPI) is a leading Democratic-leaning digital agency specializing in political campaigns, advocacy, and public affairs advertising with deep expertise in data-driven persuasion.

Craft Worldwide is a global creative production and content agency network specializing in adapting and localizing advertising content across markets for major multinational brands.