YAML (YAML Ain't Markup Language) is a human-readable data serialization standard that works seamlessly with all programming languages. Coursera's YAML skill catalogue guides you through understanding, creating and implementing YAML files for configuration, data sharing, and data storage purposes. You'll learn about the syntax, data types, and structures in YAML, how to work with multi-document YAML files, and how to use YAML for configuration management and deployment. This skill will enhance your capabilities in software development, DevOps, and other IT roles as you master working with applications such as Kubernetes, Ansible, and Docker.