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Azure Fundamentals · Lesson

IaaS, PaaS, and SaaS Explained

Break down the three cloud service models with real-world examples, and understand which layer of the stack each model abstracts away from you.

The Cloud Service Model Stack

Cloud services come in three flavours — IaaS, PaaS, and SaaS. They differ in how much of the stack the provider runs for you, from raw hardware up to a finished app.

IaaS: Infrastructure as a Service

IaaS rents you virtual machines, storage, and networking. You manage the OS and everything above; Azure handles the physical hardware. The VM is yours to control.

# IaaS example: create a VM (you manage OS and above)
az vm create \
  --resource-group myRG \
  --name myIaaSVM \
  --image Win2022Datacenter \
  --size Standard_B2s

All lessons in this course

  1. Cloud vs. Traditional On-Premises
  2. IaaS, PaaS, and SaaS Explained
  3. Public, Private, and Hybrid Cloud
  4. Key Cloud Benefits and Economies of Scale
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