Xdebug Cloud is hosted service that makes it possible to initiate Xdebug debugging sessions without networking complications.
It acts as a proxy service that both Xdebug and your IDE connect to, unlike with original step debugging where Xdebug needs to make a connection to your IDE. Making a connection to an external IP address is often more straightforwards than navigating complex network set-ups with for example Docker, Vagrant, or a cloud hosted application.
Xdebug Cloud needs support in your IDE. At the moment, only PhpStorm has support for Xdebug Cloud.
This video explains how Xdebug Cloud works in more detail:
At this moment Xdebug Cloud is in private alpha mode. If you want to be kept up to date, please sign up to the newsletter (at most one email per month).