Infrastructure & IaC
Immutable Infrastructure Reference
Understand the principles of immutable infrastructure, blue-green deployments, and how to eliminate configuration drift.
Calculations run locally in your browserTool
About this tool
Immutable Infrastructure Reference
Replace, never modify — the immutable infrastructure reference.
• Infrastructure planning
• CI/CD validation
• Cost estimation
Next step
Continue with Utility Matrix tools for the next decision in this workflow.
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FAQ
What does this tool tell you?
Replace, never modify — the immutable infrastructure reference.
What affects the result most?
Immutable: never modify deployed servers — replace with new AMI/image, blue-green deploy. Phoenix server pattern: servers are regularly replaced from base image — no snowflake drift. Cattle vs pets: cattle = interchangeable, numbered, replaceable; pets = named, unique, precious.
How should I use the result?
Use this tool to orient quickly to the concepts, field names, or values you are about to look up in a full specification or vendor documentation. It summarizes the common cases; the authoritative source remains whichever standard or vendor doc defines the values themselves.
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