How to create multiplayer Online networking cross-platform?

Multiplayer & Networking
1

Hi everybody!

  1. As the title, How to create multiplayer Online networking cross-platform?
    Ex: Android can play in a battle with iOS and Windows 10 UWP
  2. How to play in local network? (Bluetooth, Wifi)

Thank you!

2

Read all the Network documentation on the Unity site - Manual, Tutorials, etc. Then come back with specific questions. Good luck!

3

Thank Jos-Yule!