Demystifying server-side rendering in React
Let's have a closer look at the feature that allows you to build universal applications with React Server-Side Rendering — SSR from here on — is the ability of a front-end framework to render markup while running on a back-end system. Applications that have the ability to render both on the server and on the client are called universal apps. In order to understand why SSR is needed, we need to understand the evolution of web applications in the past 10 years.