Virtualization is great technology deployed in ICT (or even ICS).
There are many merits for live system or application development but we must not forget:
- It is still the same platform subject to regular cyber maintenance
- Same cyber protection like removing unused applications, disabling unused system services, using least privilge session to run application etc.
- Regular backup for recovery provision to minimize unplanned service interruption: whether conventional backup approach or real image of the virtualized environment