Azure Network Reference Architectures

Azure Network Reference Architectures

By now, you’ve learned about VNets, peering, firewalls, DNS, and more.
Let’s bring it all together with real Azure networking architectures you can apply in production.

Design Pattern 1: Hub-Spoke with VPN Gateway

Perfect for hybrid connectivity and centralized control.

Key Features:

• Central Hub VNet with:
  • VPN Gateway
  • Azure Firewall or NVA
  • DDoS Protection
• Multiple Spoke VNets for apps/environments
• VNet Peering for traffic

Diagram:

             [On-Premises]
                  |
        ====== Site-to-Site VPN ======
                  |
          +------------------+
          |    Hub VNet      |
          |  VPN + Firewall  |
          +------------------+
            /      |       \
           /       |        \
     [Spoke A] [Spoke B] [Spoke C]

Design Pattern 2: Private Link + NAT Gateway

For secure outbound and fully private access to PaaS.

Key Features:

• No public IPs exposed
• Access services using Private Endpoint
• Use NAT Gateway for consistent outbound traffic

Use Case:

• Enterprises with strict compliance
• Apps accessing databases, storage privately

Design Pattern 3: Global Architecture with ExpressRoute

For companies operating across multiple geographies.

Key Features:

• Global VNet Peering
• Multiple regions connected via ExpressRoute
• Central NVA / Firewall clusters in each region

Architecture Best Practices

Reference Architectures

• Microsoft Hub-Spoke Network Reference
• Private Link Design Patterns

Next: How to monitor and optimize cost in your Azure networks

– Kasi @ KasdevTech or LinkedIn