The talk will start with a small introduction about GraphQL, followed by a small reminder (1-2 sliders) about how REST APIs work, differences in the learning curve, performance, and an answered question if those can be compared (REST - architectural concept, GraphQL - query language). Later, I'll present a GraphQL demo and discuss the tooling it offers. The presentation will finish with a summary of the pros and cons and when it could be used instead of, but also together with, REST.