This document summarizes key points from the GraphQL Summit including: 1. History and future of GraphQL, different production uses across industries and languages. 2. Schema stitching and progressive adoption techniques discussed as important for large companies. 3. Hybrid architectures are trending. 4. Details on Apollo Client 2.0, Apollo Engine, reactive GraphQL, subscriptions, live queries and the Graphcool framework. 5. Other topics included best practices for surfacing errors and handling authentication.