In the modern search landscape, page performance, pre-rendered HTML, and dynamic structured data are the cornerstone of search engine eligibility.
Traditional Single Page Applications (SPAs) built solely with client-side React render empty shell tags (<div id='root'></div>) to crawlers. This causes delayed indexing in Google render queues and complete invisibility to AI search engines like Perplexity, ChatGPT Search, and Google AI Overviews.
By adopting Next.js (App Router), marketing sites leverage Static Site Generation (SSG) and Incremental Static Revalidation (ISR) to deliver sub-100ms response times directly from Edge CDNs, guaranteeing 95+ Core Web Vitals scores.