Worked on the guardian/amigo repository to modernize runtime environments and enhance operational guidance. Upgraded the Image Copier Lambda to runtime v3 by updating AWS CDK libraries and dependencies, ensuring compatibility with the latest Java runtime and deployed Lambda images. Improved maintainability and reduced operational risk by aligning infrastructure tooling with current standards. Addressed user guidance by refining documentation, specifically correcting the README to clarify usage of the AWS CLI and jq for listing stack instances and extracting account IDs. Utilized TypeScript, Shell, and Markdown to deliver these changes, supporting smoother multi-account operations and more reliable identification of targeted accounts.