Final answer:
The primary function of an Azure Virtual Network (VNet) is to deliver a secure and isolated network environment for Azure resources, facilitating secure communications and providing tools for network segmentation and traffic control.
Step-by-step explanation:
The primary function of an Azure Virtual Network (VNet) is to provide a secure, isolated, and highly customizable network environment within the Microsoft Azure cloud. VNets enable Azure resources, like virtual machines (VMs) and databases, to securely communicate with each other, the internet, and on-premises networks. A VNet can be segmented into multiple subnets, each serving a customized role, enhancing security, and organizational control. Features like Network Security Groups (NSG) and Azure Firewall can be used to further control traffic within a VNet. The use of VNets is crucial for enterprises that need to safeguard their data and manage their cloud resources effectively.