WHY SERVER FUNCTIONS MATTER IN A SERVER COMPONENT WORLD

Summary from the TLDR Web Dev newsletter

Server functions allow a client-first architecture by allowing transparent data fetching through RPCs. This is in contrast to React Server Components (RSCs), which take a server-centric approach by serializing and streaming JSX from the server. Server functions prioritize granular invalidation and client-side caching, while RSCs optimize for bundle size by offloading more work to the server at the cost of larger payloads.