What is the primary benefit of server virtualization?

The primary benefit of server virtualization is that it allows multiple virtual servers to operate on a single physical server. This means that organizations can maximize resource utilization, reduce hardware costs, and improve overall efficiency. By running multiple virtual instances, each with its own operating system and applications, on a single physical machine, businesses can minimize the physical footprint of their infrastructure.

Additionally, this setup enables more agile management of resources, as virtual servers can be created, modified, or migrated with relative ease, compared to managing individual physical servers. This flexibility also supports better disaster recovery processes by enabling quicker restoration of services.

In the context of the other options, while enhancing security, simplifying network connectivity, and having backups are important features in a server environment, they do not represent the fundamental advantage of virtualization itself. The primary focus of virtualization is to consolidate resources and optimize the use of physical servers, which aligns directly with the chosen answer.