Which Azure Virtual Network (VNet) feature allows private communication between resources in different regions? Learn how VNet Peering provides secure, low-latency connectivity for cross-region Azure deployments.
Table of Contents
Question
Which feature of Azure Virtual Network (VNet) allows private communication between Azure resources across different regions?
A. ExpressRoute
B. VPN Gateway
C. Azure Front Door
D. Azure Bastion
E. VNet Peering
Answer
E. VNet Peering
Explanation
VNet Peering enables private communication between Azure Virtual Networks across different regions, improving network security and performance.
The Azure Virtual Network (VNet) feature that allows private communication between Azure resources across different regions is VNet Peering.
VNet Peering enables seamless, private connectivity between two or more Azure Virtual Networks, making them appear as a single network for connectivity purposes. This includes both local peering (within the same region) and global VNet peering (across different Azure regions).
- Global VNet Peering: Specifically, global VNet peering allows VNets in different Azure regions to communicate privately over the Microsoft backbone network, without traversing the public internet, using gateways, or requiring encryption. This ensures low-latency, high-bandwidth, and secure data transfer between regions.
- Security and Performance: All traffic between peered VNets remains private and is routed directly through Microsoft’s backbone infrastructure, providing high security and performance comparable to traffic within a single VNet.
- No Downtime or Bandwidth Restrictions: Peering can be configured without downtime, and there are no additional bandwidth restrictions beyond what the VM size allows.
- Network Security Groups: You can use network security groups (NSGs) to control access between peered VNets or subnets, allowing granular security management.
VNet Peering—especially global VNet peering—enables private, low-latency, high-bandwidth communication between Azure VNets in different regions, using the Microsoft backbone network and without exposing traffic to the public internet.
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