Advanced SSR: Transitioning from Traditional SSR to 'Islands' Architecture

Islands architecture renders the page as static HTML but hydrates only small, isolated 'islands' of interactivity.

Traditional SSR hydratesthe whole tree, even static text. This causes high 'Time to Interactive' (TTI). In Islands architecture (popularized by frameworks like Astro or via custom Nuxt setups), the majority of the page is dead HTML. Only components like a 'Search Bar' or 'Shopping Cart' are shipped with JavaScript. This drastically reduces the JS payload and CPU work on the client.