• Public Cloud: using 1 public cloud such as AWS, Azure, Google Cloud.
    • Multi-Cloud: using more than 1 public cloud in one deployment.
    • Hybrid Cloud: using public and private clouds in one environment
      • This is NOT using Public Cloud and Legacy on-premises hardware.

    Cloud Service Models

    1. Data Center Hosting: Place equipment in a building managed by a vendor. You pay for the facilities only.
    2. Infrastructure as a Service (IaaS): Vendor manages facilities and everything else related to servers up to the OS. You pay per second or minute for the OS used to the vendor. Lose some flexibility, but big risk reductions.
    3. Platform as a Service (PaaS): Good for running an application only. The unit of consumption is the runtime environment. You manage the application and the data, but the vendor manges all else.