SPA vs SSG vs SSR

Single page applications load once and update content dynamically without full page reloads, giving a smooth user experience but sometimes at the cost of slower initial load and weaker search engine visibility. Server side rendering generates HTML on the server for each request, improving initial load time and SEO. Static site generation pre builds pages at build time, offering the fastest performance for content that does not change often. Architects choose between these rendering strategies based on performance needs, content type, and SEO requirements.