💻 Virtual Machine

🔹 Core Concept
An Azure Virtual Machine (VM) is an on-demand, scalable computing resource that provides the flexibility of virtualization without needing to buy and maintain physical hardware.

🔹 Purpose
Used to host applications, databases, and development environments, or to extend on-premises data centers into Azure’s cloud infrastructure.

🔹 Operating System Support
Supports a wide range of operating systems, including Windows Server, Linux distributions (Ubuntu, CentOS, Red Hat, etc.), and custom OS images.

🔹 VM Sizes & Series
Available in multiple sizes and families — General Purpose, Compute Optimized, Memory Optimized, Storage Optimized, GPU, and HPC — to meet diverse workload requirements.

🔹 Storage Integration
Uses Managed Disks (Standard HDD, Standard SSD, Premium SSD, Ultra Disk) for OS, data, and temporary storage needs with high availability and durability.

🔹 Networking Capabilities
Connects to Azure Virtual Networks (VNets) for secure communication and integrates with NSGs, Load Balancers, Public IPs, and Bastion for access and protection.

🔹 High Availability & Resilience
Ensures uptime through Availability Sets, Availability Zones, and Scale Sets, protecting against hardware failures and planned maintenance events.

🔹 Scalability & Automation
Supports VM Scale Sets, Auto-scaling, and Azure Automation for dynamic scaling and lifecycle management of virtual machines.

🔹 Security & Compliance
Provides robust security with Azure Defender for Servers, Just-in-Time (JIT) Access, Disk Encryption, and Azure Policy enforcement.

🔹 Monitoring & Management
Fully monitored using Azure Monitor, Log Analytics, and Metrics, providing performance insights, alerts, and optimization recommendations.