YAML is a whitespace-sensitive, indentation-based serialization language that represents maps and sequences without mandatory delimiters like or < >. Tools such as Ansible playbooks, Kubernetes manifest files, and many CI/CD pipelines natively use YAML. JSON (curly braces and commas), XML (angle-bracket tags), and INI (section headers with key=value pairs) do not rely on indentation to define structure.
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Why is YAML preferred over JSON for certain tasks?
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How does YAML differ from XML, and why is it better suited for infrastructure-as-code?
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What makes YAML whitespace-sensitive, and how does indentation define hierarchy?