I want to build a server with 300 people. How shall I do it?

More than 300 people are going to fight, and how can we build a server to be efficient?
I’m thinking of GameLift from Amazon. Is it a good choice?

Well what I know about server, Jenson the guy who came up with knew styles of GPUs like those Quadro GV100, which is like a super computer using GPUs are design to reduce the amount of servers, down from multiple servers to only 1 server but they do cost a lot each about 20 grand for 1, I myself not interested in that way, I say do your research first then go from there.

I checked out Nvidia, they have Nvidia DGX-2 which can hold up to 16 GPUs.