What type of virtualization have you used in your projects?

Projects often use several types of virtualization:

1. Full Virtualization — creating fully isolated virtual machines with their own guest OS. Example: VMware, VirtualBox.

2. Paravirtualization — the guest OS is aware of virtualization and interacts with the hypervisor to improve performance. Example: Xen.

3. Containerization — lightweight virtualization at the OS level, where containers share the host kernel but are isolated by processes and filesystem. Example: Docker, Kubernetes.

In modern DevOps projects, containerization is most commonly used because it allows for quick deployment and scaling of applications with minimal overhead.