Helly Hansen migrated to Vercel and drove 80% Black Friday growth

Helly Hansen, a 150-year-old Norwegian technical apparel brand, successfully enhanced its digital presence and e-commerce performance by transitioning from an outdated tech stack to the modern solutions offered by Next.js and Vercel. This change addressed critical performance issues that previously hampered their site, especially during peak revenue events like Black Friday and Cyber Monday. By shifting from client-side to server-side rendering, they improved Core Web Vitals, reduced load times, and eliminated major layout shifts, resulting in an 80% year-over-year growth during Black Friday with zero downtime. The migration strategy, which began with optimizing the checkout process, proved beneficial in boosting conversion rates and marketing efficiency. Additionally, the move to a modern, API-first infrastructure increased development velocity and allowed frequent A/B testing, leading to a more personalized customer experience and 21% e-commerce growth. Helly Hansen's partnership with Vercel not only resolved immediate performance challenges but also established a scalable and future-proof foundation for ongoing innovation and competitiveness.