AMI (Amazon Machine Image)

 Basics of AMI

  • contains OS and other installed software
  • can contain additional storage volumes to attach to the instance
  • exists in one region only
  • contains launch permissions - who can access the AMI 

Categories of AMI

  • Windows vs Linux
  • EBS-backed or instance store backed
  • 32 bit or 64 bit
  • x86 or ARM Instruction set
  • PV or HVM virtualization
Sources of AMI
  1. Quick Start - created by AWS
  2. My AMI - created by you 
  3. AWS Marketplace - by 3rd parties, from vendors for specific use case
  4. Community -  by others, not verified, use at your own risk
Benefits of EBS -backed 
  • created storage (16TiB as opposed to 10 Gib)
  • can be stopped and restarted
  • can be converted into instance store backed if needed
  • boots quicker



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