How can server-side rendering (SSR) improve the performance and SEO of a web application, and what are some common frameworks that support SSR?

SSR improves performance by rendering HTML on the server, reducing the time to first paint and making content available to users faster. It enhances SEO by providing search engines with fully rendered HTML, improving indexability. Common frameworks supporting SSR include Next.js for React applications, Nuxt.js for Vue.js, and Angular Universal for Angular. These frameworks facilitate SSR implementation, improving both performance and SEO.