Alex DeBrie 3/18/2019

Understanding CloudFormation Updates: Replacement, Resource Policies, and Stack Policies

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This technical article details AWS CloudFormation's three update behaviors (no interruption, some interruption, and replacement) and explains how to use Stack Policies and UpdateReplace Policies to prevent accidental resource deletion or disruption during infrastructure updates, using EC2 instances as a practical example.

Understanding CloudFormation Updates: Replacement, Resource Policies, and Stack Policies

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