Server-side rendering

• With server-side rendering, the HTML of the page is generated on a server for each request. The generated HTML, JSON data, and JavaScript instructions to make the page interactive are then sent to the client.
• On the client, the HTML is used to show a fast non-interactive page, while React uses the JSON data and JavaScript instructions to make components interactive (for example, attaching event handlers to a button). This process is called hydration.