If I have subdomains, how does the HTTP to HTTPS redirection on Cloudflare affect them, and do I need separate configurations?

Cloudflare's Universal SSL certificate automatically covers the root domain and `www` subdomain. If your other subdomains are also proxied through Cloudflare (indicated by the orange cloud icon in your DNS settings), the 'Always Use HTTPS' setting typically applies to them automatically, forcing HTTPS redirection. For unproxied subdomains or those managed outside Cloudflare, the rules won't apply. For complex subdomain setups or wildcards, higher-tier Cloudflare plans might offer custom certificates or specific Page Rules may be needed to ensure consistent HTTPS enforcement across all desired subdomains.