Skip to main content
Welcome to the very first module of our Azure networking journey. Because AZ-700: Designing and Implementing Microsoft Azure Networking Solutions focuses on Azure networking, we begin with the foundation: the Virtual Network (VNet). A VNet is your private network in the cloud — the environment where virtual machines, databases, and applications communicate securely and remain isolated from the public Internet unless you explicitly expose resources via public IPs, load balancers, or NAT. Understanding VNets gives you a solid base for every other Azure networking topic. This lesson introduces the core concepts you need to design, secure, and operate Azure networks. Key topics covered:
  • Azure VNets and secure traffic control between resources.
  • CIDR-based IP planning for scalable address allocation.
  • Subnetting to organize services and apply security boundaries.
  • Private IP addressing behavior (static vs dynamic).
  • Region and subscription design for performance, compliance, and governance.
The image outlines four learning objectives related to Azure networking, including Azure VNets, CIDR-based IP planning, subnetting, and the use of private IPs.
Azure assigns private IPs via an internal DHCP service. A dynamic private IP is allocated to the network interface and typically persists for the interface lifetime. To guarantee a persistent address (for example, a database endpoint), configure a static private IP.
Core concepts at a glance: Subnetting helps you enforce boundaries and policies in a predictable way:
  • Place public-facing web servers in a subnet with outbound NAT (NAT Gateway) or assign a public IP to the load balancer.
  • Keep databases in a restricted subnet with no direct Internet access and strict Network Security Group (NSG) rules.
  • Use a separate management subnet for administrative access and bastion hosts.
Geography and subscription placement affect both performance and governance:
  • Deploy VNets in regions that minimize latency for users and satisfy data-residency laws.
  • Separate subscriptions to isolate billing, access control, and environments (production, development, testing).
The image features "Learning Objectives" on a blue-green gradient background and a point about how geographic and subscription design impacts performance and compliance strategy.
By mastering these fundamentals — VNets, CIDR planning, subnetting, private IP behavior, and region/subscription strategy — you’ll be ready to design resilient, secure, and compliant Azure networking solutions. Ready to get started? Links and references

Watch Video