13 · Environments & Packaging
SSR / CSR
Server vs client rendering
CSR renders pages in the browser with JavaScript. SSR renders HTML on the server first, then hydrates interactivity. Frameworks often mix both.
Concrete example
A marketing page may be SSR for SEO; a dense dashboard may be mostly CSR.
Why it matters
Choosing wrong here causes blank pages, SEO gaps, or sluggish first loads.