AZ-900 Certification Notes

Chapter 3.2 - Resource Groups & Azure Resource Manager

Resource Groups

Everything in Azure is inside a resource group, no exceptions! While all resources must be inside of a resource group, the resource groups themselves are not a resource.

Resource Group Facts

• One Resource
  • Each resource can only exist in a single resource group.
• Add/Remove
  • You can add or remove resources to any resource group at any time.
• Move Resource
  • You can move a resource from one resource group to another.
• Multiple Regions
  • Resources from multiple regions can be in one resource group.
• Access Control
  • You can give users access to a resource group and everything in it.
• Interact
  • Resources can interact with other resources in different resource groups.
• Location
  • A resource group has a location, or region, as it stores meta data about the resources in it.

Azure Resource Manager (ARM)

This is deployment and management services for Azure. If you interact with any of the resources on Azure, it goes through ARM.

ARM Benefits

• Group Resource Handling
  • You can deploy, manage, and monitor resources as a group.
• Consistency
  • Deploying resources from various tools will always result in the same consistent state.
• Dependencies
  • Define dependencies between resources to make sure they don't get in a fight.
• Access Control
  • Built-in features in the ARM make it easy to assign access rights to users.
• Tagging
  • Tag resources to easily identify them for future scenarios. Tagging is a way to label individual resources.
• Billing
  • Use tagging to stay on top of billing for groups of resources.

Summary

• Resource Groups
  • All resources belong to a resource group. It isn't a resource, but helps structure your Azure architecture.
• Azure Resource Manager
  • All interaction with Azure resources go through the ARM. It's the main Azure Architecture component for creating, updating, and manipulating resources.