VNet (Virtual Network)
A VNet is Azure’s isolated virtual network where you define address space and subnets.
Updated: 2026-03-05
Definition
An Azure Virtual Network (VNet) is the foundational networking service used to host resources in an isolated address space.
You create subnets, configure routing, and apply security controls (like NSGs) for segmentation.
Key points
- Address space + subnets
- Integrates with NSGs and routing
- Connectivity via VPN/ExpressRoute/peering
Common mistakes
- Designing without subnets for separation (hard to secure later).
- Misunderstanding peering and routing behavior.
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