Ask HN: Any service like a CDN that can be used to add custom domains for app

hi all, Is there any services like a CDN or reverse proxy that i can use to point to my web application and add custom domains. So it would be like a reverse proxy but the main thing i need is for it to manage the SSLs so i dont have to sort it out. It will only be pointing to static files so a CDN could work if it has a good API and is somewhat flexible with custom headers.

So a client requests to use a domain via my app. They point the DNS record where it is needed. i request to add the domain to the provider i use, they setup the domain with an SSL from lets encrypt and renew it when needed. And the domain loads the static files from my pull location. I can also set any needed headers.