AZ-900 Cheat Sheet 3

Cloud Deployment Model

Cloud Deployment Model is simple a separation which describes where are the company resources deployed. Whenever this is in public cloud provider environment or private datacenter.

Below table presents high level deployment model separation

Public Cloud

Key Characteristics

• Everything runs on cloud provider hardware

• No local hardware

• Some services share hardware with other customers

Advantages

• No CapEx (No initial investment)

• High Availability

• Agility

• Pay as you Go (PAYG) pricing

• No hardware maintenance

• No deep technical skills required

Disadvantages

• Not all security and compliance policies can be met

• No ownership over the physical infrastructure

• Rare specific scenarios can’t be done

Private Cloud

Key Characteristics

• Everything runs on your own datacenter

• Self-service should be provided

• You maintain the hardware

Advantages

• Can support any scenario

• Total control over security and infrastructure

• Can meet any security and compliance policy

Disadvantages

• Initial investment is required (CapEx)

• Limited agility constrained by server capacity and team skills

• Very dependent on IT skills & expertise

Hybrid Cloud

Key Characteristics

• Combines both Public & Private cloud

Advantages

• Great flexibility

• You can run any legacy apps in private cloud

• Can utilize existing infrastructure

• Meet any security& compliance requirements

• Can take advantage of all public cloud benefits

Disadvantages

• Can be more expensive

• Complicated to manage due to larger landscape

• Most dependent on IT skills & expertise from all three models