What is YAML?
Blog post from Postman
YAML, an acronym for "YAML Ain't Markup Language" or "Yet Another Markup Language," is a versatile data serialization format known for its human readability and compatibility with machines, making it popular for configuration files and data exchange across programming languages with varying data structures. It employs indentation and key-value pairs to represent different data forms, such as scalars, lists, and dictionaries, and supports comments for added clarity. Despite being a superset of JSON, YAML is often favored for its intuitive, indentation-based syntax that resembles human-structured data, offering native support for complex data types like dates and binary data. While JSON is more prevalent in web services and APIs due to its wide language support and explicit syntax, YAML is typically chosen for configuration files in DevOps, API definitions, metadata organization, and data serialization where readability is paramount. Best practices for utilizing YAML include ensuring consistency in indentation and naming conventions, using spaces over tabs for indentation, validating syntax with linters, maintaining security by not storing sensitive data in plaintext, and modularizing large files for better maintainability.
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