Which backend service(database) available for third party apps?

Question

I am developing third party app. For that, I want to store user related data. So, I want to know that which backend service(database) is available for use? and what is the storage space limit for it? Thanks.

Answer 1

Spotify doesn't provide any back-end services for you to use. However, you may also use any service you wish, or write your own.