AZ-900 Certification Notes

Chapter 12.5 - Best Practices

Spending Limits

• Default Limit
  • Some Azure accounts with monthly credits to use will have default spending limits. When the credits are used, the limit kicks in
• No Increase
  • When the credits are gone, either remove the limit entirely or leave it in effect
• No Spending Limit
  • Pay-as-you-go accounts have no spending limit functionality

Quotas

• Property Limit
  • A quota is a limit on a certain property of an Azure service. For example, a maximum of 100 namespaces for Event Hub
• Ensure Service Level
  • The quotas are necessary to ensure Azure can maintain their high service level
• Quota Change
  • If you need to increase the quota for a particular service, you can ask Microsoft to increase them

Tags

• Tags are non-functional labels that attach to a resource or resource group
• Use as many tags as you want

Tags - Continued

• Identify Roles
  • Protect sensitive data by defining which roles can access a resource
• Related Resources
  • To make bulk processing and updating easier, define which resources are related
• Filter
  • Filter resources per project, customer or for reporting purposes
• Unambiguous
  • Create a list for tags used that includes: description, tag name, and potential values

Pay-as-you-go

Pay-as-you-go = Expensive

Reserved Instances

Reserved instances can save you a lot of money. Not all Azure services can be reserved.

Reserved Capacity

• 1-or 3-Year commitment
  • Azure SQL
    • Save up to 80%
  • Synapse Analytics
    • Save up to 65%
  • Cosmos DB
    • Save up to 65%
  • Redis Cache
    • Save up to 55% Change regions, scale up or down, apply it to multiple subscriptions, and cancel at any time.

Azure Hybrid Benefits

Azure will let you use existing licenses instead of forcing you to purchase new ones with every new VM or server.

Advisor

The Advisor portal gives you best practices advice in general through recommendations. For cost optimization, this could be a recommendation to scale down a virtual machine, removing networks you aren't using, and storage that is dormant.