What is GraphQL?

Reaching production-ready and open source status in September 2016, GraphQL is a growing publicly explored query language for APIs and databases. Its appeal among query languages is the simplicity and clarity of a query itself. The user has the power to intuitively form structured queries that mirror the hierarchy of the returned JSON and that demand a vast quantity of data in a time efficient manner. The query language enables users to receive only what they when asking for data from the underlying infrastructure by specifying in the query the data type and field(s) nested in the type.