Cross-Stack References
- it allow the reuse of existing resource created by other stacks
- nested stack just for reusing the template!!
- outputs are normally not visible from other stacks
- Nested stacks can reference them
- outputs can be exported..making them visible from other stacks
- exports must have a unique name in the regions
- Fn::ImportValue can be used for referencing the resource of which stack has ‘export’ in the output
