What is React Server Components?

React Server Components (RSCs) are a new type of React component that render on the server before being sent to the client. They allow developers to write components that can directly access server-side resources like databases or file systems without the need for a separate API layer. This improves performance by reducing client-side JavaScript and simplifying data fetching. They are commonly used to build faster, more efficient web applications by shifting rendering and data fetching to the server.