How to assign a subdomain to Cloudflare Pages for free with a single CNAME record, without migrating the org domain's DNS. A record of fact-checking against the official docs: that Subdomain setup is Enterprise-only, that external-DNS custom domains are Pages-only and not available for Workers, and the current state of SSR and framework adapters.
Steps to move a GitHub Pages custom domain to a different domain and redirect old URLs to the new one while preserving the path. Covers handling the PWA Service Worker and the domain-verification caveats for resolving 'domain is already taken'.
An attempt to assign a subdomain managed by an external organization's DNS as a Cloudflare Workers custom domain hit the constraint that Cloudflare's free plan doesn't accept external subdomains as zones. The final solution was to place AWS CloudFront + WAF in front as a termination layer.
Explains the difference between name servers and DNS, the relationship between domain ownership and name servers, NS delegation, and the roles of registrars and registries
[AWS Amplify] Pitfalls When Setting Up Custom Domains with Sakura Internet Domains