YAML

YAML (YAML Ain't Markup Language) is a human-friendly data serialization language prioritizing readability and ease of use.

YAML is a human-readable data serialization language, primarily used for configuration files and inter-process data exchange. It employs a minimal, indentation-based syntax (like Python) to define structure, utilizing colons for key-value pairs (mappings) and hyphens for list items (sequences). YAML is a superset of JSON, offering key benefits like support for comments and reusable data references (anchors). This clarity and feature set make it the standard for major DevOps tools, including Kubernetes deployments and Ansible Playbooks.

https://yaml.org