GraphQL is an open-source query language for APIs that fulfills queries with existing data; it was originally developed by Meta.
The technology was offered as a public open-source project in 2015. It is meant to provide an alternative to specific architectures with the purpose of increasing productivity and limiting the amounts of data that can be transferred. The technology is an API that works specifically for Facebook, Credit Karma, GitHub, IntuitIntuit, PayPal, the New York Times, and other organizations.