A security team is setting up a new environment for hosting the organization's on-premises software application as a cloud-based service. Which of the following should the team ensure is in place in order for the organization to follow security best practices?

Virtualization and isolation of resources are crucial for security in a cloud-based service environment. Virtualization allows multiple virtual machines (VMs) to run on a single physical server, and isolation ensures that these VMs are logically separated from each other. This prevents a compromise in one VM from affecting others, thereby containing potential security breaches and limiting their impact. While network segmentation, data encryption, and strong authentication policies are also vital security best practices, virtualization and isolation directly address the fundamental architecture of a cloud environment by providing a secure, compartmentalized foundation for hosting services. Without proper isolation, other security controls might be less effective.