JSON, or JavaScript Object Notation, is a minimal, readable format for structuring data. It is used primarily to transmit data between a server and web application, as an alternative to XML. YAML is a flexible, human readable file format that is ideal for storing object trees. YAML stands for “YAML Ain’t Markup Language”. It is easier to read than JSON, and can contain richer meta data. If you would like to switch formats, for example from JSON to YAML or vice versa, there are numerous website out there that can convert your code from one format to another. Check out this json2yaml converter.