This document discusses using OpenStack for VDI (Virtual Desktop Infrastructure). It provides an example of a large company, Ctrip, that uses OpenStack VDI for over 10,000 agents with over 200,000 daily connections. Key technical issues with OpenStack VDI are then outlined, including provisioning, connection protocols, cloud-init configuration, boot storms, and the need for automation. Automation is discussed as being critical but challenging for tasks like backups, password recovery, and resource management.