Where and how to make the game available to the customer?

Hello, I'm starting in the area of games development and I did a course where they taught using "Photon", but in some research I discovered that for my project structure that I intend to create it is necessary to use a Database to save the information of the character and power make a user account login where you can have several characters, I believe that to do this type of function Photon is not useful, or am I wrong? From what I researched it seems that it would not be necessary to use Photon because when I log in I already direct the client to choose his "character" or am I mistaken? so that this structure is made available to the customer where it should be placed? on Amazon for example? how would it be done? or at least what should I search the most?