GraphQL: "Mischievous" advice. Why we need a GraphQL when there is the REST?

During this session we will talk about the opportunities provided by GraphQL as an alternative to the typical Rest architecture. How to ask less data using GraphQL? How to avoid an API versioning? How not to shoot yourself in the foot using GraphQL? Alexey will talk about the experience of using this query language and the nuances of using the Apollo library.