Mastering Azure VNet Peering with PowerShell Automation

In Azure, Virtual Networks (VNets) are isolated by default. To allow resources in different departments—like Production and Development —to communicate securely over the Microsoft backbone, we use VNet Peering . The Scenario We are building two distinct environments: Production VNet: 10.1.0.0/16 Development VNet: 10.2.0.0/16 Our goal is to connect them so that a VM in Production can reach a VM in Development using private IP addresses. 1. The Core Concepts VNet Peering: A low-latency, high-bandwidth connection. Traffic is private and never touches the public internet. Transitivity: Peering is not transitive. If A is peered with B, and B is peered with C, A cannot talk to C unless you peer them directly. NSGs: Network Security Groups act as a firewall. Even if networks are peered, the NSG must allow the specific traffic (like ICMP/Ping). 2. The Complete Automation Script This script handles the entire lifecycle: Resource Group creation, Networking, Security, VM Deployment, and Peering i