For modern content-heavy websites, the debate between Server-Side Rendering (SSR) and Static Site Generation (SSG) often gets muddied by complex serverless architecture promises. But when you examine real-world performance, security, and infrastructure costs, SSG remains the clear baseline winner.
The Core Advantage: Pre-computed HTML
When a request hits a statically generated page, the edge server returns fully rendered HTML immediately. There are no database queries to await, no microservice round-trips, and zero cold starts.
// Next.js App Router Static Generation
export async function generateStaticParams() {
const posts = await getAllPosts();
return posts.map((post) => ({ slug: post.slug }));
}Because pre-rendered assets can be cached across global Edge Content Delivery Networks (CDNs) indefinitely, time-to-first-byte (TTFB) drops from hundreds of milliseconds down to sub-30ms globally.
Security and Operational Resilience
Beyond raw speed, static architecture fundamentally shrinks your attack surface. Without dynamic database connections or runtime application servers evaluating user requests on every page view, common vulnerabilities like SQL injection and server-side request forgery (SSRF) are structurally impossible at the content layer.
# Static build artifacts can be hosted anywhere
npm run build # generates purely static HTML, CSS, and JS in /outWhen SSG Fits Best
SSG is ideal for content that changes at build-time rather than per-user request: developer blogs, documentation hubs, marketing pages, and editorial publications. Paired with automated deployment hooks on push, your site updates automatically without incurring the ongoing cost or operational overhead of maintaining live Node.js servers.