Developer Dictionary
YAML
Definition
YAML Ain't Markup Language; a human-readable data serialization standard.
Deep Dive
YAML (YAML Ain't Markup Language) is a human-readable data serialization standard designed for storing and exchanging data in a clean, minimalist format. Its primary design goal is readability, making it exceptionally easy for humans to understand and write, especially when compared to more verbose formats like XML or even JSON for complex structures. YAML achieves this by relying heavily on indentation to denote hierarchy and structure, rather than using brackets, braces, or closing tags, resulting in a very compact and intuitive syntax.
Examples & Use Cases
- 1Configuration files for tools like Docker Compose, Kubernetes, or Ansible, where complex application deployments and infrastructure settings are defined in an easily parsable format
- 2Storing structured data for a static site generator, defining metadata for blog posts or portfolio items in a human-friendly way
- 3Defining CI/CD pipelines (e.g., GitHub Actions, GitLab CI) where build steps and deployment stages are described in a clear, sequential manner.
Related Terms
JSONXMLData SerializationConfiguration FileMarkdownDocker ComposeKubernetes