Vercel has optimized Incremental Static Regeneration (ISR) cache updates to improve speed and cost efficiency for developers using Next.js. The latest updates focus on regionalized caching, which reduces latency by up to 80% when an ISR cache read occurs within the same geographic area, particularly beneficial for global users outside North America. Additionally, automatic compression of ISR cache entries has been enabled, reducing ISR spend by up to 65%. These improvements require no configuration changes and are now live for all Vercel customers.