What is SSR (Server-Side Rendering) and how does it benefit Vue apps?

SSR renders Vue components into HTML strings on the server and sends them to the browser for hydration.

The primary benefits are SEO (search engines see fully rendered content) and Time-to-Content (faster initial paint). In SSR, the server generates the static HTML, and the client 'hydrates' it by attaching event listeners and making it reactive without re-rendering the DOM.