Case Study: Debenhams achieves 40% mobile revenue lift and 2x faster mobile experience with Mobify PWA

Debenhams Launches a Progressive Web App as First Step in Digital Transformation

Debenhams, a UK department store undergoing a “Debenhams Redesigned” digital transformation, faced a critical mobile challenge: traffic was growing rapidly but mobile conversions lagged behind desktop due to a slow, legacy-backed site. With peak trading season approaching, the retailer needed a fast, high-converting mobile experience delivered quickly without disrupting backend systems.

Debenhams partnered with Mobify and SapientRazorfish to launch a front-end Progressive Web App in 90 days, using a decoupled integration layer to leave legacy systems intact. The PWA doubled site speed, cut typical shopper journey time by more than half, and delivered offline resilience — driving a 40% increase in mobile revenue and a 20% rise in conversions while creating a scalable foundation for future channels.

Debenhams

Ross Clemmow

Managing Director Retail, Digital, Food & Events