The main purpose of virtualization in computing environments is to create virtual versions of physical computing resources, such as servers, storage, and networks. This process allows multiple virtual machines (VMs) to run on a single physical device, optimizing resource utilization and reducing hardware costs. Virtualization enhances flexibility, as VMs can be easily created, managed, and migrated across different hosts. It also facilitates disaster recovery and testing environments, making IT infrastructure more agile and efficient.