Technical Shutdown Log The technical shutdown log records the sequence of actions: endpoint deactivation dates and HTTP 410 activation, model artefact archival with final version hash and storage location, credential revocation dates with verification test results, infrastructure release dates and resource identifiers, monitoring data final snapshot export, and IaC state file archival. For automated decommissions, the log includes the Terraform destroy output, Vault lease revocation audit trail, and API gateway configuration changes. Key outputs

• Sequential action record with dates and verification
• Model integrity hash at archival
• Credential revocation verification
• IaC state file archived