What is firebase Auth?

Related questions

1. What kind of database does firebase use?
2. Is firebase realtime database free?
3. Is firebase a backend?
4. Is firebase good for startups?
5. Is firebase better than SQL?
6. Can firebase store images?
7. What we can do with Firebase?
8. How does firebase database work?
9. Does Google own firebase?
10. What is storage bucket in firebase?

Tags

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2. #federated
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5. #authenticate
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12. #users
13. #libraries
14. #google
15. #backend
16. #phone
17. #passwords
18. #facebook
19. #firebase
20. #supports
21. #authentication