Writing
Blog
Notes on CloudFormation lifecycle, pipeline automation and the parts of infrastructure as code that only show up after a year in production.
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Finding forgotten CloudFormation stacks in your AWS account
A read-only AWS CLI script that lists CloudFormation stacks in every region, flags ones not updated in N days, and shows tags to check against Git.
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Deleting CloudFormation stacks when the template is removed from Git
Removing a template from your repository doesn't remove its stack. Why that happens, what makes deletion risky, and three ways to clean up safely.
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AWS Proton end of life: what happens to your stacks, and what to do next
AWS Proton reached end of support on 7 October 2026. Your CloudFormation stacks keep running. Your delivery pipelines do not. A practical migration guide.