Virtualization training focuses on creating and managing virtual environments, allowing multiple operating systems to be simulated on a single physical machine. It covers technologies such as VMware, Hyper-V, and KVM, which allow hardware resources to be partitioned to host multiple virtual machines. Skills learned include configuring and managing hypervisors, managing resources (CPU, memory, storage) to optimize performance, creating and maintaining cloud infrastructures, and implementing high availability and disaster recovery solutions. Virtualization is essential for reducing infrastructure costs, improving flexibility, and ensuring better resource management in complex IT environments.