Explain Azure networking concepts: VNet, Subnets, and Network Security Groups.

Azure networking components work together to provide secure connectivity:\n\n• Virtual Network (VNet): Isolated network environment in Azure cloud\n• Subnets: Logical divisions within VNet for resource organization\n• Network Security Groups (NSGs): Virtual firewalls with inbound/outbound rules\n• Application Security Groups: Logical grouping for security policies\n\nVNets enable secure communication between Azure resources. Subnets segment networks for better security and management. NSGs control traffic flow with allow/deny rules based on source, destination, port, and protocol.