I don’t know, what exactly to search on google to find right solution

writen by Dobroslav Radosavljevič
Is the service that you plan to provide going to be hosted by you? Then I guess as long as the customer sets their DNS then they should point to your IP and for verification you could requests some endpoint at their custom domain /myendpointverifyingdomain

writen by Justyna Ilczuk
As long as the customer managed to point to the right domain in this case then it’s as if they own it? So should be good enough for verification?

writen by Justyna Ilczuk