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- Test Content
- | **AZ-900 Domain Area** | **Weight** |
| ---- | ---- | ---- |
| Describe cloud concepts | 25-30% |
| Describe Azure architecture and services | 35-40% |
| Describe Azure management and governance | 30-35% |
- ### Introduction to cloud computing
- Define cloud computing.
- Compute Power
- Storage
- Pay only ressources you use
- Upkeep is done by cloud provider
- Describe the shared responsibility model.
- Cloud Provider: Physical security, power, cooling, and network connectivity are the responsibility
- Consumer: responsible for the data and information stored in the cloud.
- IAAS (Infrastructure)-> PAAS (Platform) -> SAAS (Software)
- ![Diagram showing the responsibilities of the shared responsibility model.](https://learn.microsoft.com/en-us/training/wwl-azure/describe-cloud-compute/media/shared-responsibility-b3829bfe.svg){:height 231, :width 700}
- Define cloud models, including public, private, and hybrid.
- | **Public cloud** | **Private cloud** | **Hybrid cloud** |
| ---- | ---- | ---- |
| No capital expenditures to scale up | Organizations have complete control over resources and security | Provides the most flexibility |
| Applications can be quickly provisioned and deprovisioned | Data is not collocated with other organizations’ data | Organizations determine where to run their applications |
| Organizations pay only for what they use | Hardware must be purchased for startup and maintenance | Organizations control security, compliance, or legal requirements |
| Organizations don’t have complete control over resources and security | Organizations are responsible for hardware maintenance and updates | |
- Azure ARC
- Manage Cloud environment
- Identify appropriate use cases for each cloud model.
- Describe the consumption-based model.
- Capital expenditure (CapEx)
- upfront one time expenditure
- Operational expenditure (OpEx)
- spending money on services or products over time
- Cloud computing is here
- Compare cloud pricing models.
- pay-as-you-go pricing model
- ### Describe the benefits of using cloud services
- Describe the benefits of high availability and scalability in the cloud.
- uptime (or availability)
- demand (or scale)
- each Service has own SLA
- Describe the benefits of reliability and predictability in the cloud.
- Describe the benefits of security and governance in the cloud.
- Describe the benefits of manageability in the cloud.