@vue/server-renderer facilitates server-side rendering (SSR) of Vue.js applications, enabling faster initial page loads and improved SEO. It transforms Vue components into HTML strings on the server, which are then sent to the client. This package also handles hydration, seamlessly integrating the server-rendered HTML into the client-side Vue app. It offers customizable renderers, allowing developers to generate optimized HTML output tailored to specific server environments and performance requirements. Server-side rendering can drastically improve perceived performance.