Global fashion eyewear brand Gentle Monster, faced the challenge of evolving privacy regulations and a reduced reliance on cookies, which were impacting the accuracy of their ad performance measurement.
As a trendsetter in the industry, Gentle Monster continuously seeks ways to refine its digital marketing strategies and better understand consumer behavior. To address the impact of changing privacy regulations and the diminishing role of cookies, the brand partnered with Jellyfish to find a data-driven solution that would deliver more precise performance insights and support their forward-thinking approach.
The Jellyfish Analytics team implemented a server-based Meta Conversions API (CAPI), reducing data loss from browser-transmitted pixel events and enabling high-quality data collection for improved targeting and measurement accuracy. To evaluate the impact of CAPI, the Jellyfish team carefully monitored Gentle Monster's always-on purchase campaigns, analyzing performance data before and after the CAPI implementation.
“With 3rd-party cookie restrictions limiting targeting, a solution was needed to minimize data loss and improve accuracy for high-engagement users. Implementing the server-based "Conversion API" enhanced data quality, significantly boosting ROAS.”
– Gentle Monster Marketing Manager
The adoption of Meta Conversions API helped Gentle Monster successfully navigate the challenges of a privacy-first digital landscape, driving measurable growth in advertising efficiency:
Increase in Return on Ad spend
Decrease in average CPA (Purchase)
Additional Purchase conversion reported
Marketing is in the middle of a major reset, and the way brands and agencies work together is changing with it. Joining The Six Sells Podcast, Stephanie Parry, Managing Director, UK&, Jellyfish, dives into the evolution of client-agency dynamics, the forces driving brand influence today, and what it takes to build storytelling that truly resonates.
Read Article
To deliver real value, AI can no longer rely on siloed data. In a recent article for New Digital Age, Manpreet Gill, Analytics Director at Jellyfish, breaks down why AI needs data from both sides of Martech and Adtech to start connecting acquisition to retention, media exposure to lifetime value, and targeting to how the customer actually experiences your brand.
Read Article
This major expansion of paid media optimization capabilities within our proprietary Share of Model™ Platform, brings together Google PMax, ChatGPT, TikTok, DV360, YouTube & Reddit through an always-on strategy assistant.
Read News
To mark the 25th anniversary of the cult horror franchise, Final Destination returned in 2025 with Final Destination: Bloodlines. Warner Bros partnered with Jellyfish to design a bold, eerie activation designed to reintroduce the saga and tap into Gen Z's taste for twisted thrills.
Read More