Nested Stacks

• resources in a single stack share a lifecycle

  • stack resource has a limit of 500)
  • can’t easily reuse resources e.g. a VPC

• Nested stacks

  • root stack & parent stack: within which you can create nested stack by providing parameter to that stack and templateURL, unless that stack has default parameters
  • output of that stack can be referenced in root stack by stackname.Outputs.xxxx
  • dependency relationship can be built among the stacks/ signalling
  • allow reuse of individual template/ easy orchestration
  • use when everything is lifecycle linked/ sources limited

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