Xen Orchestra Lite is a lightweight version of the Xen Orchestra meant for single-host administration, running directly from your browser without having to deploy anything, hosted on XCP-ng directly.
XO Lite is still a work in progress! However, it's meant to cover all basic actions you need to boostrap your infrastructure or just do basic operation on your VMs.
XO Lite isn't an orchestrator, it's just a local management console. If you want to orchestrate your VMs (load balancing, backup, warm migration and so on), you MUST use Xen Orchestra!
XO Lite credentials are the same than the host (SSH credentials), usually
root as user and the password chosen during the installation process.