Dedicated Servers may have up to 50 players in a server.

[Schwido 0]

I thought about making a big creation , with a big map, but the max players on a server doesn't allow me to do that (10 players).

if you can please allow up to 50 players on a server, it would be great, thanks.

to the creators of Arma III and DayZ, I think you could do better than that.

[RedEagle_P1. 905]

The game is not ready for that yet. It likely wont work no matter the power of the server at that player count. 

Edited March 22, 2020 by RedEagle_P1.

[bojo2736 1016]

I think they said it was not designed to be MMP.  And as @RedEagle_P1. said, it's not ready for that.  It will break your heart if you try.  Trust me.