I need to create random number on server side and return this value to some clients on different platforms. Maybe one of Firebase Services do I need? I use Flutter, if this is important.
I understand that I can create my own server and use hosting, so maybe Firebase can help me?
Not sure why you need to create a random number on server side when you have Random class in dart:math.
If you really want to do this in Firebase you can create a Cloud Function in Firebase.