Stack Inheritance

Inherit shared component defaults from a catalog and override them per environment — the pattern that eliminates copy-pasted stack config.

Stacks

Try it out View on GitHub

cloudposse / atmos

Try it out

Install Atmos
Try the example

Installation guide →

Copy the example into a new directory and make it your own:

atmos init examples/demo-stacks
cd demo-stacks

Follow the README for prerequisites and next steps.

Initialization and repository settings

See it in action

RECORDED DEMO

demo-stacks

Recorded from this example

Real commands. Real output.

README.md1.7 KB

View on GitHub

Example: Demo Stacks

Inherit configuration across environments to eliminate duplication.

Learn more about Stack Inheritance.

What You'll See

Catalog pattern with base component defaults
Import to inherit shared configuration
Environment-specific overrides in deploy stacks

Try It

cd examples/demo-stacks

# See how configuration is inherited (--query focuses on the vars section)
atmos describe component myapp -s dev --query .vars
atmos describe component myapp -s prod --query .vars

# Compare the resolved configuration across environments
atmos describe stacks --components myapp --sections vars

TIP

Drop --query/--sections to see the full resolved configuration, including imports, inheritance chain, and deps.

Key Files

File	Purpose
`stacks/catalog/myapp.yaml`	Base component configuration (shared defaults)
`stacks/deploy/dev.yaml`	Dev environment with imports and overrides
`stacks/deploy/prod.yaml`	Prod environment with different overrides