GraphQL is an open source query language from Facebook that connects APIs to Frontend applications by providing a complete and understandable description of the data in your API, allowing clients to ask for exactly what they need. Graphcool provides a flexible backend platform combining GraphQL with AWS Lambda, enabling developers to quickly get a project up and running. A one-click deploy button is available, which clones a React and Relay application, making it easy to try out GraphQL and its capabilities.