⟩ Please explain what is Xen in Citrix Xen Desktop Solution and why is it there?
Xen is an open-source hypervisor that is somehow appealed to Citrix developers and Citrix Cloud services are based on further development of this hypervisors only. Xen being an open-source project has contributors from around the world. This is the only major open-source hypervisor that supports Dom-0. Thus it is the best choice for cloud developers till date.