What is a vApp primarily used for in VMware vSphere?

A vApp in VMware vSphere is primarily designed for managing multiple virtual machines (VMs) as a single unit. This capability allows administrators to encapsulate a group of VMs that work together to provide a specific service or application, facilitating more efficient resource management and deployment. By treating a collection of VMs as a cohesive unit, operations such as starting, stopping, and configuring can be performed in a more streamlined manner, which is beneficial for workflows that involve interdependent applications or services.

The functionality of vApps enhances the organization and resource allocation of VMs, especially in complex environments where you might need to manage multiple VMs with specific dependencies. With vApps, you can set resource limits, allocate resources dynamically, and apply policies at the group level instead of individual VMs.

The other options do not align with the primary use of vApps. Improving network security pertains more to network configurations and firewalls rather than VM management. Consolidating network devices is related to network architecture rather than virtualization of computer resources. Deploying physical servers refers to hardware provisioning rather than managing virtual environments.