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Immutable Infrastructure

Immutable infrastructure replaces servers entirely for updates rather than modifying existing servers.

What is Immutable Infrastructure?

Immutable infrastructure is an approach where servers are never modified after deployment. Updates are made by building new servers with the desired configuration and replacing the old ones.

Immutable Benefits

Consistency, Reproducibility, Simplified rollback, Drift prevention, Security.

Common Misconceptions

  • "Immutable means no updates" - New images replace old
  • "Containers equal immutable" - Containers enable but don't guarantee
  • "Immutable is always better" - Tradeoffs exist