YAML & JSON Fundamentals

Summary

The near-universal configuration formats across cloud tools — CloudFormation templates, Kubernetes manifests, and most API responses use one or both — understanding their syntax prevents a huge share of frustrating errors.

• 1Write a small YAML file and a small JSON file describing the same data, and compare readability.
• 2Learn common YAML pitfalls: inconsistent indentation, tabs vs spaces, and quoting rules.
• 3Practice parsing a JSON API response using a tool like jq.