AZ-900 Certification Notes

Chapter 2.5 - Cloud Architect Models

• Private Cloud
  • Pros
    • Complete control of infrastructure
    • Benefits of public cloud
    • Better security and privacy
  • Cons
    • Maintenance
    • Staffing
• Public Cloud
  • Pros
    • No purchase of hardware
    • Low monthly fees
  • Cons
    • No control over features and versions
    • No physical access
• Hybrid Cloud
  • Pros
    • Avoid disruptions and outages
    • Adhere to regulation, governance etc.
    • Span both public and private cloud
    • Alleviate CapEx investments
  • Cons
    • Complex infrastructures

Exam Tips

• Private cloud is Azure on your own hardware in a location of your choice. All the benefits of public cloud, but you can lock it down. A lot of staff required.
• Public cloud is Azure, AWS, GCP. No upfront costs, but monthly usage. Little control over services and infrastructure.
• A hybrid cloud model is the best of private and public, but could be complex.