Course 2 - IaaS.pdf

IaaS

• way to provision and use infrastructure on demand without worrying about hardware and maintenance
• responsible for what happens on the infrastructure
• datacenter abstraction
• foundation on which other service models are built

VMs

• provision virtual machines

workhorse

• emulated computers
• way to create dynamically configured machines on demand
• useful for local development

host:

• the machine on which the VM is running

guest:

• virtualized machine

hypervisor:

• creates and manages guest machines, translates and limits instructions

• optimize resource usage

  lower provider cost ⇒ lower customer cost

• enable multi-tenant usage (VMs for multiple clients on the same machine)

  • optimize cost
  • ensure isolation