YAML is a human-readable data serialization standard that can be used in conjunction with all programming languages and is often used to write configuration files. The flexibility is partially due to the fact that YAML is made up of bits and pieces of other languages. Some of the other features here are YAML is naturally insensitive to quotation marks and braces, making special characters easier to define, particularly in strings. YAML is a data-oriented language that has features derived from Perl, C, HTML, and other languages. YAML is a superset of JSON that comes with multiple built-in advantages such as including comments, self-referencing, and support for complex datatypes.