Yor is an open-source tool that is designed to provide automated tagging and tracing for infrastructure as code (IaC). It automatically tags IaC templates with attribution and ownership details, unique IDs that get carried across to cloud resources, and any other need-to-know information.

According to the project’s website, Yor automates away manual and inconsistent tagging for templates from Terraform, CloudFormation, and Serverless frameworks.

Yor enables version-controlled owner assignment and resource tracing based on git history and extends tag enforcement logic into the CI/CD pipeline. It also supports different taggers that can be used to trace and identify resources. 

The open-source project provides a unique ID created when running the tag command which enables complete traceability between build time and run time resources.

Additional details on Yor are available here