| Feature | Details |
|---|---|
| Azure Regions | Azure provides 60+ regions around the globe. Regions are geographical locations. Deploy services to multiple regions for High Availability, Low Latency, and Geographical reach. |
| Availability Zones | Each Azure region may have multiple Availability Zones, which are independent data centers with their own network connectivity and power resources. Not all regions have Availability Zones. |
| Example Regions with Zones | East US – 3, West Europe – 3, Southeast Asia – 3, West Central US – 0. |
| Feature | Details |
|---|---|
| Resource Group | Group of resources like VMs, Databases, etc. Associated with one subscription. A resource group can contain resources from multiple regions. |
| Tags | Tags are used to categorize resources for tracking and reporting. Tags are not inherited by default. |
| Subscription Merging | Two subscriptions cannot be merged, but resources can be moved between subscriptions. |
| Feature | Details |
|---|---|
| Virtual Machines (VMs) | VM with Premium SSD offers 99.9% SLA, Standard SSD offers 99.5%, and Standard HDD offers 95% SLA. |
| Availability Set | Logical grouping of VMs. 2 VMs in the same availability set offer 99.95% availability. |
| VM Scale Set | Allows auto and manual scaling of VMs, up to 1000 VM instances. Supports both vertical and horizontal scaling. |
| Feature | Details |
|---|---|
| IaaS | Infrastructure as a Service: Manage infrastructure in the cloud (VM, Database, OS, etc.). Responsible for both software and hardware. |
| PaaS | Platform as a Service: Focus on application deployment, no need to manage underlying hardware (e.g., Azure App Service, Azure Container). |
| SaaS | Software as a Service: You use the application, not responsible for deployment or maintenance (e.g., Office 365, Google Docs). |
| Containers | Azure Containers allow virtualization without needing to manage VMs, supporting microservice architecture with tools like Kubernetes. |
| Feature | Details |
|---|---|
| Azure Virtual Network | Isolated network in the Azure cloud, similar to LAN in on-premise infrastructure. |
| Subnets | Used to isolate public and private resources. All subnets within a VNet can communicate with each other. |
| Network Security Group (NSG) | An internal firewall in Azure, allowing/blocking traffic based on IP address and ports. |
| Feature | Details |
|---|---|
| Azure Security Center | Threat management service, providing security score to improve protection. Basic protection is free, while Azure Defender offers premium security. |
| Azure AD MFA | Multi-Factor Authentication in Azure AD, ensuring enhanced security through conditional access and identity protection. |
| Feature | Details |
|---|---|
| LRS | Locally Redundant Storage: Syncs 3 copies in the same data center. |
| ZRS | Zone Redundant Storage: Syncs 3 copies in different Availability Zones. |
| GRS | Geo-Redundant Storage: Syncs data across primary and secondary regions. |