What exactly is GraphQL?

Related questions

1. Is GraphQL better than rest?
2. Why would you use GraphQL?
3. Can GraphQL replace rest?
4. What are the benefits of GraphQL?
5. What is GraphQL good for?
6. Is GraphQL production ready?
7. What language is GraphQL?
8. What is GQL?
9. Should I use GraphQL or rest?
10. What is the difference between rest and GraphQL?

Tags

1. #easier
2. #describes
3. #makes
4. #characteristics
5. #describe
6. #exactly
7. #server
8. #graphql
9. #needs
10. #aggregate
11. #sources
12. #system
13. #specify
14. #three
15. #syntax
16. #client
17. #multiple
18. #generally