This episode explores the debate between Single Page Application (SPA) and Server-Side Rendering (SSR) within Microfrontend (MFE) architectures, which decompose frontends to enhance scalability and team autonomy. SPAs, relying on client-side rendering after an initial shell load, offer development flexibility and fast subsequent navigation, suiting interactive applications like internal tools and SaaS platforms. Conversely, SSR generates full HTML on the server for rapid initial page display and native SEO benefits, making it preferable for public, content-heavy sites and e-commerce. The choice involves trade-offs in performance, SEO, developer experience, and operational complexity. The document highlights that neither approach is universally superior and that hybrid strategies, combining the strengths of SSR for initial load and SPA for interactivity, are increasingly pragmatic for diverse, large-scale MFE systems, a trend supported by evolving frameworks and edge computing technologies.