Infrastructure
Production environment variables are set.
Database is migrated and seeded if necessary.
Custom domain is configured and SSL is active.
Performance
Lighthouse score is >90 for performance.
Images are optimized (WebP, proper sizing).
Unused CSS/JS is removed.
SEO & Meta
Title tags and meta descriptions are present on all pages.
OpenGraph images are configured.
robots.txt and sitemap.xml are generated.