YAML Advantages:

• More human-readable and concise
• Supports comments for documentation
• Better for complex templates
• Less prone to syntax errors (no missing commas/brackets)
  JSON Advantages:
• Smaller file size
• Faster parsing
• Better tool support in some IDEs
• More familiar to developers
  Example comparison:

# YAML
Resources:
  MyBucket:
    Type: AWS::S3::Bucket
    Properties:
      BucketName: my-example-bucket

{
  "Resources": {
    "MyBucket": {
      "Type": "AWS::S3::Bucket",
      "Properties": {
        "BucketName": "my-example-bucket"
      }
    }
  }
}

Most teams prefer YAML for readability and maintainability.