4️⃣ VNet Peering

🔹 Definition

VNet Peering connects two VNets privately using Azure backbone.

• No VPN
• Low latency
• CIDRs must not overlap

When to use

• App VNet ↔ DB VNet
• Hub ↔ Spoke communication

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🔧 Azure CLI

az network vnet peering create \
  --resource-group rg-vnet-demo \
  --vnet-name vnet-main \
  --name peer-to-backend \
  --remote-vnet vnet-backend \
  --allow-vnet-access

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🖥️ Azure Portal Flow

Portal → VNet → Peerings → Add
→ Select Remote VNet
→ Enable Access

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📦 Example

VNet-A ↔ VNet-B
Private IP → Private IP

✔ No internet ✔ No gateway

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