YAML
YAML (YAML Ain't Markup Language) is a human-readable data serialization language commonly used for configuration files, data exchange, and storing structured data. It uses indentation to denote structure and supports scalars, sequences, and mappings, making it popular in DevOps, cloud computing, and application settings. It is often used as an alternative to JSON or XML for its readability and ease of use.
Developers should learn YAML manipulation for managing configuration files in tools like Docker, Kubernetes, Ansible, and CI/CD pipelines, where it is the standard format. It is essential for infrastructure-as-code (IaC) practices, enabling version-controlled and reproducible environments, and for data serialization in applications that require human-editable settings without complex syntax.