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

What this post added

This post details Helly Hansen's migration to Next.js and Vercel, focusing on performance improvements and Black Friday growth. Key technical aspects include an incremental migration strategy, starting with checkout pages, and leveraging Vercel's CDN and Functions for scalability. The shift from client-side to server-side rendering on Vercel's Edge Network significantly improved Core Web Vitals, reducing load times and Cumulative Layout Shift. For peak traffic events like Black Friday, Vercel Data Cache and Incremental Static Regeneration (ISR) were utilized for performance and stability. The post also highlights the use of feature flags for increased testing velocity and personalization.