I developed a next.js app where everyone can design his own profile page.
Today, everyone using a unique sub-domain like jake.app-name.com and ben.app-name.com.
I want to give everyone the option to connect his own domain to point to his profile page like jake.com.
I know how to manage it on the server after the domain is pointing to the server.
My question is how can I connect, using code (API) many domains to my google app engine without any limitation in the future? What is required? Google will manage all the SSL certificates automatically? I will have an additional cost?
Thank you.