Case Study: thredUP achieves real-time Black Friday promotions and faster rollouts with Split

Split Powers Record Black Friday Deals at thredUP

thredUP, the world’s largest online consignment store, needed a better way to deliver features and promotions to hundreds of thousands of daily visitors. Their homegrown rollout system relied on manual whitelists and slow, service-by-service propagation, which caused rollout delays, inconsistent customer experiences, and distracted engineers from core work.

By adopting Split’s feature-flagging platform, thredUP implemented real-time, attribute-driven targeting and full-stack A/B testing—using ML scores and dynamic promo codes to serve unique Black Friday offers and rapidly change or roll back treatments. The result: instantaneous rollouts and rollbacks, smoother customer experiences, streamlined analytics via webhooks, faster QA across teams, and fewer engineering overheads.

ThredUp

Dan DeMeyere

VP Engineering