Case Study: Stylepit achieves 70% increase in Return on Ad Spend without cookies with Twilio Segment

How Stylepit increased ROAS by 70% without the cookie

Stylepit, a Copenhagen-based online fashion retailer serving 20+ European markets, faced the industry-wide challenge of strengthening its customer engagement as GDPR and the demise of third-party cookies made legacy tracking unreliable. The company needed to move from a minimal marketing stack to a robust, privacy-compliant approach that could capture and activate first-party data across channels.

Working with agency Atcore and Twilio Segment, Stylepit implemented a first-party, no-cookie customer data platform, syncing models from Google BigQuery into Segment Personas to build value-based audiences for ad platforms. The holiday campaign using these audiences delivered a 1.6x increase in orders, 1.7x lift in ROAS, a 7x increase in CTR and a 14% reduction in total ad spend, while doubling its marketing stack and improving cross-team time-to-value.

Stylepit

Martin Brummerstedt

Data Scientist & Digital Project Manager