🌐 Virtual Network

🔹 Core Concept
Azure Virtual Network (VNet) is the foundation of Azure networking — enabling secure communication between Azure resources, on-premises environments, and the internet.

🔹 Network Isolation
Provides complete logical isolation within Azure, allowing you to define and control your own IP address ranges, subnets, and routing.

🔹 Address Space & Subnets
Supports private IP address spaces (RFC 1918) and subnet division to logically separate workloads and manage traffic efficiently.

🔹 Network Security
Secures traffic using Network Security Groups (NSGs), Azure Firewall, DDoS Protection, and Application Security Groups (ASGs) for layered defense.

🔹 Connectivity Options
Connect VNets to each other and to on-premises networks using VNet Peering, VPN Gateway, ExpressRoute, Private Link, and Service Endpoints.

🔹 Routing Control
Customize traffic paths with User-Defined Routes (UDRs) and deploy Network Virtual Appliances (NVAs) for advanced network management.

🔹 Integration with Azure Services
Establish private connectivity to key Azure services such as Azure SQL, Storage, App Service, and AKS, enabling secure cloud solutions.

🔹 Scalability & High Availability
Easily scale as resources grow and maintain uptime using Availability Zones, Load Balancers, and redundancy configurations.

🔹 DNS Integration
Leverage Azure DNS or configure custom DNS servers for name resolution within and across VNets.

🔹 Monitoring & Management
Monitor, analyze, and troubleshoot networks with Azure Monitor, Network Watcher, and Traffic Analytics for better performance and compliance.