Cookie builds to plain static HTML, so it deploys anywhere that can serve static files.
Netlify. The fastest path, click the deploy button in the README, or connect the repo directly in Netlify and it will pick up the Jekyll build automatically.
Any other static host. Run a production build and push the _site output:
JEKYLL_ENV=production bundle exec jekyll build
Upload the contents of _site to Vercel, GitHub Pages, S3, or any host that serves static files.
Before deploying, double check url and baseurl in _config.yml, they’re used to generate absolute links in the sitemap, RSS feed, and SEO tags.