Azure Networking Foundation
Azure Virtual Network (VNet) is the building block of Azure networking — providing isolation, segmentation, and connectivity for your cloud resources.
Key Components
- VNet & Subnets: Isolated network spaces with custom addressing
- VPN Gateway: Site-to-site and point-to-site encrypted tunnels
- ExpressRoute: Private, dedicated connection to Azure (up to 100 Gbps)
- NSG (Network Security Groups): Firewall rules for traffic filtering
- Azure Firewall: Managed cloud-native firewall with threat intelligence
Design Best Practices
Hub-spoke topology, network segmentation, private endpoints for PaaS services, and DDoS Protection for internet-facing workloads.



