Building Virtual Networks with PowerShell & CLI addresses a problem nearly every modern infrastructure team faces: networks are growing faster than they can be safely managed. Manual configuration doesn't scale. Portal-driven changes drift. Small mistakes turn into outages. When networks span cloud, on-prem, and hybrid environments, the cost of inconsistency becomes unacceptable.

This book shows a better way. It teaches you how to build, secure, update, validate, and recover virtual networks entirely through automation using PowerShell and the Azure CLI. Instead of treating networking as a fragile set of one-off actions, you'll learn how to define networks as repeatable, testable workflows that behave predictably across environments. From core VNets and subnets to hybrid VPNs, routing, DNS, security controls, and diagnostics, everything is built with automation first.

You'll gain practical, production-ready skills that translate directly into day-to-day engineering work, including how to:

• Design scalable virtual network architectures that work across cloud and on-prem environments

• Automate VNets, subnets, NSGs, routing, DNS, gateways, and peering using PowerShell and CLI

• Build idempotent scripts that can be safely re-run without breaking environments

• Integrate network automation into CI/CD pipelines with validation and rollback

• Implement monitoring, alerting, and automated remediation for network failures

• Create a reusable enterprise network automation toolkit your team can standardize on

Every chapter focuses on practical execution, not theory. The patterns in this book are drawn from real enterprise environments and reflect how experienced system administrators, network engineers, cloud engineers, and DevOps teams operate today. All examples are designed to be reused, extended, and adapted as your infrastructure grows.

If you want faster deployments, fewer outages, stronger security, and full confidence in your network changes, this book gives you the tools and structure to make it happen. Build networks that scale, survive change, and stay under control. Start automating your infrastructure the right way.