Most enterprise web platforms are still served by templating layers stitched onto monolithic PHP. The cost of that pattern is no longer hidden — it shows up in Core Web Vitals, in server bills, and in the latency tail your sales team complains about.
React Server Components flip the contract: the server already has the data, and instead of serialising state into a hydration payload, it ships rendered HTML directly. The client only ever pays for what it actually needs to interact with.
On a recent enterprise migration, this single architectural change reduced Time-to-Interactive by 62%, cut serverless invocation cost by 41%, and removed the entire client-side data-fetching layer.