SSG (Static Site Generation)
noun · web architecture
A static generation method where all HTML pages are pre-built at build time, then served directly from a CDN — delivering near-instantaneous load times and enhanced security through the absence of a dynamic server.
A web architecture adopted by Next.js that transforms dynamic data (APIs, CMS, databases) into static HTML files during compilation — combining the flexibility of a dynamic site with the speed of a static site.
A deployment strategy where each page is a self-contained HTML file, distributable globally via content delivery networks (CDN), eliminating the dependency on an application server and drastically reducing hosting costs.
SSG (Static Site Generation) is a web architecture technique where all HTML pages are pre-generated during the build phase, before any user even visits the site. These static HTML files are then served directly from a CDN, without any server-side computation for each request. Next.js excels at this approach, and our agency uses it to deliver ultra-fast websites whose content is immediately available and perfectly indexable by search engines.
SSG offers considerable SEO advantages because each page is a complete HTML file, perfectly readable by Google's robots on the first crawl, without requiring JavaScript execution. The near-instantaneous load times directly improve your Core Web Vitals scores, an official Google ranking factor. Our agency leverages SSG via Next.js to position your content pages at the top of search results, transforming your site into a magnet for qualified organic traffic.
SSG generates HTML pages once at build time, while SSR generates them dynamically on the server for each user request. SSG is faster because pages are pre-built and served from a CDN, but it is less suited for content that changes frequently. SSR is ideal for personalized pages or real-time data. Our agency often combines both strategies within a single Next.js project to get the best of both approaches based on each page's needs.
SSG strengthens your site's security by eliminating the classic attack surface of dynamic applications: no exposed application server, no database accessible in real time, no injectable SQL queries. Static HTML files served by a CDN cannot be compromised by common vulnerabilities (SQL injection, server-side XSS, brute force attacks). Our agency recommends this architecture for showcase and institutional websites where security and reliability are absolute priorities.
SSG is perfectly suited for the product catalogs of an e-commerce website, as product pages can be pre-generated for instant loading and optimal SEO. However, dynamic pages like the cart, user account, or checkout require client-side rendering (CSR). Our agency designs hybrid architectures with Next.js that combine SSG for catalog pages and CSR for interactive features, ensuring both SEO performance and a smooth shopping experience.
ISR (Incremental Static Regeneration) is an evolution of SSG offered by Next.js that allows individual static pages to be regenerated after the initial build, without rebuilding the entire site. Where classic SSG requires a full rebuild to update content, ISR revalidates pages in the background according to a configurable interval. Our agency uses ISR for projects requiring frequently updated content while maintaining the exceptional performance of static rendering.