Jellyfish is an integrated global digital marketing business that unites media, creative, data and proprietary AI technology to help brands accelerate growth across channels.
Independently researched by the SalesHive team. Ratings are from public review platforms; this page is not sponsored by or affiliated with Jellyfish. Research last updated December 2025.
What is Jellyfish?
Jellyfish is an integrated global digital marketing and media partner that combines agency services, technology, consultancy and training for brands in nearly 50 countries. As part of The Brandtech Group, Jellyfish focuses on reinventing marketing using generative AI, advanced data capabilities and full-funnel media to help progressive brands "move faster, smarter, together." The company should not be confused with the separate engineering intelligence software vendor Jellyfish (jellyfish.co), which serves a different market. Jellyfish was founded in 2005 and has grown to almost 2,000 employees (“Jellies”) across roughly 38 offices worldwide, with its global headquarters in London and major hubs in the US, EMEA, APAC and Latin America. Over the years it has evolved from a performance marketing shop into a full-service digital partner spanning media planning and buying, creative, analytics, commerce, cloud, CRM and extensive training programs.
A defining aspect of Jellyfish’s offer is its proprietary AI- and data-driven technology stack. This includes its AI-powered media in-housing platform (often referred to in the trade press as Agentic or the Media Ops Agent), which automates media research, evaluation, content strategy and activation and is designed to let brands bring more of their media operations in-house while relying on Jellyfish’s systems and expertise. On top of this media operating system, the firm has developed tools such as AI Studios for rapid content production in partnership with generative AI platform Pencil, Now Next Soon for AI-driven media scenario modeling and marketing mix modeling, J+ Bidding for real-time budget optimization, Share of Model for measuring brand presence in large language models, and Social Agents for autonomous AI-assisted social marketing insights.
Jellyfish is also deeply embedded in the adtech and martech ecosystem. It holds advanced certifications across Google Marketing Platform and Google Cloud, is an Amazon Ads partner with award-winning case studies, and is a certified partner for Salesforce Marketing Cloud, Braze, Adobe Campaign, Adobe Analytics, Bloomreach Engagement and other leading CRM and analytics platforms. Through its Jellyfish Cloud unit, the company designs and operates cloud-enabled marketing infrastructure, integrating data, AI and platforms into bespoke architectures for global brands. Additionally, Jellyfish runs a substantial training business, offering public and private courses on Google Marketing Platform, analytics, SEO, paid media, creative and AI with transparent per-course pricing.
In June 2023 The Brandtech Group completed its acquisition of Jellyfish, building on an earlier majority stake held by French group Fimalac and positioning Jellyfish as a core pillar of Brandtech’s AI-led marketing services portfolio. Today Jellyfish works with more than 500 brands including Google, Netflix, Amazon, Uber, Bissell, UGG and other global enterprises, and is frequently recognized by Google, Amazon Ads and industry rankings for its innovation in media efficiency, measurement and AI-driven marketing.
Jellyfish key features
Teams typically use it for global media planning and buying across search, social, programmatic, retail media and streaming, bringing media and marketing operations in-house while leveraging Jellyfish's AI-powered platform and expertise, building integrated data, analytics and measurement foundations (GA4, Adobe Analytics, MMM, server-side tagging), and more.
- AI-powered media in-housing platform that automates media research, evaluation, content strategy and activation so brands can bring more media operations in-house while using Jellyfish's tooling and expertise.
- AI Studios for large-scale creative production. using the Pencil generative AI platform trained on billions in ad spend to generate and optimize thousands of assets significantly faster and cheaper than traditional workflows.
- Now Next Soon. an AI-driven simulation and marketing mix modeling environment that predicts outcomes of media plans, tests scenarios in minutes and helps reallocate budget for better performance before campaigns go live.
- J+ Bidding. Jellyfish's automated bidding and budget allocation layer that dynamically adjusts in-market ad spend across channels based on real-time performance signals.
- Share of Model. a platform that measures how brands are perceived and recommended across large language models so marketers can understand and optimize their visibility in AI-driven search and recommendation experiences.
- Social Agents. autonomous AI social marketing agents powered by Gemini and designed for Pencil Pro that analyze text, image and video content, uncover trends and recommend social optimizations and content prompts.
- Switchboard and J+ Scribe tools that connect creative and media performance data, refine AI-generated text and surface actionable insights to optimize copy, messaging and budget allocation.
- End-to-end paid media services across search. social, programmatic display and video, retail media and streaming platforms, underpinned by Google Marketing Platform and Amazon Ads expertise.
- Advanced analytics and measurement including Google Analytics 4. Adobe Analytics, server-side tagging, marketing mix modeling and Meridian-based open-source MMM for privacy-first performance insights.
- Cloud-enabled martech infrastructure from Jellyfish Cloud. designing and operating data and AI architectures on Google Cloud and other platforms to connect datasets and automate marketing workflows.
- CRM and lifecycle marketing programs built on Salesforce Marketing Cloud, Pardot, Braze, Adobe Campaign, Bloomreach Engagement and Segment, including loyalty programs, customer journeys and audience activation.
- Global creative and content production with language services in more than 150 languages, combining human creative teams with AI tools to produce and localize campaigns across markets at scale.
- Digital marketing training portfolio covering Google Marketing Platform, analytics, SEO, paid media, cloud and generative AI, delivered via virtual and in-person courses with transparent per-seat pricing.
- Specialist government and regulated-industry support as a GSA-approved vendor in the US, offering full-stack Google and Salesforce Marketing Cloud technologies and services to public sector organizations.
What reviewers love, and what to watch
A balanced view of Jellyfish, drawn from public reviews and product research.
Pros
- Strong exposure to large, global brands and complex multi-market campaigns, which many reviews highlight as a valuable learning and career experience.
- Deep expertise in Google Marketing Platform, Amazon Ads and other enterprise adtech/martech stacks, seen as a differentiator by clients and staff.
- Innovative use of AI and proprietary tools such as the media in-housing platform, AI Studios, Now Next Soon and Social Agents to improve speed, efficiency and performance.
- Robust internal training ecosystem and external training business (Jellyfish Training) that provide structured upskilling in GMP, analytics, SEO and other disciplines.
- Global, hybrid working environment that offers flexibility and the ability to collaborate with colleagues across regions and disciplines, noted positively in multiple Glassdoor reviews.
Cons
- Employee reviews frequently cite organizational instability, repeated restructurings and layoffs, which can affect morale and perceived job security.
- Criticism of leadership and management clarity, with some reviewers describing unclear strategy, an ‘us vs. them’ culture post-acquisition and limited input from local teams.
- Reports that proprietary internal tools and processes can add complexity or confusion for creatives and account teams, occasionally slowing work instead of streamlining it.
Jellyfish pricing
Published pricing at the time of research. Always confirm current rates with the vendor.
- Scoped around specific campaigns, markets, or channels (e.g., Amazon Ads program, SEO overhaul, analytics implementation).
- Includes strategy, planning, activation, and performance reporting for defined initiatives.
- Can include creative production, measurement frameworks and training as needed.
- Always-on media planning, buying and optimization across search, social, programmatic and retail media.
- Access to Jellyfish's AI-powered media in-housing platform, J+ technology stack and proprietary tools such as Now Next Soon, J+ Bidding and Share of Model.
- Dedicated cross-functional team (media, data, creative, cloud/CRM) with ongoing optimization, experimentation and measurement support.
Not applicable, Jellyfish engagements are scoped and priced custom based on media spend, markets, technology stack and services; there is no self-serve free plan.
Who Jellyfish is for
A strong fit for
Jellyfish is best suited to mid-market and enterprise brands with significant digital media spend, multi-market footprints and a desire to combine agency execution with advanced AI, analytics and in-housing capabilities. These organizations typically have internal marketing and data teams that want a strategic partner to modernize their stack and accelerate performance globally.
Probably not for
Very small businesses with limited media budgets, companies seeking a simple self-serve SaaS tool without agency involvement, or organizations unwilling to adopt modern data and AI-driven approaches to media and creative may find Jellyfish’s offering too complex or resource-intensive.
How Jellyfish compares
Within the media buying and digital marketing landscape, Jellyfish positions itself between traditional holding company agencies and pure-play consultancies. Compared to large network agencies, it leans more heavily into Google Marketing Platform, Amazon Ads, cloud and CRM partnerships, and invests significantly in proprietary AI tools and training. This can give Jellyfish an edge for brands that want both execution and hands-on enablement, rather than a more conventional agency-of-record relationship.
Against independent performance agencies and AI-led boutiques, Jellyfish differentiates through its global scale, broad service mix and tight integration into The Brandtech Group’s wider AI ecosystem. Competitors such as Media.Monks, Merkle, iProspect, Brainlabs or Kepler may offer comparable performance and media capabilities, but fewer combine an end-to-end AI media operating system, extensive GMP and cloud certifications, and a large public training arm in the way Jellyfish does. The trade-off is that Jellyfish’s size and ongoing organizational change can sometimes introduce complexity, so buyers should focus diligence on team stability, governance and fit with their preferred technology stack.
Frequently asked about Jellyfish
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