.YAML File Extension
File TypeYAML Document
What is a YAML file?
File created in the YAML (YAML Ain't Markup Language) format, a human-readable data format used for data serialization; used for reading and writing data independent of a specific programming language; can be used with various languages that support YAML libraries, such as C/C++, Ruby, Python, Java, Perl, C#, and PHP.
An example YAML file is app.yaml, which is used by Google's App Engine.
NOTE: YAML files more often use the .YML extension.