That would depend on whether you need any server-side application for your game. Obviously, if you want to build some kind of multiplayer game, that's a yes, an

That would depend on whether you need any server-side application for your game. Obviously, if you want to build some kind of multiplayer game, that's a yes, and your options depend on the technology you want to use for the backend. Otherwise, if the game sits entirely in the client, you can get away with just serving static assets from something like Amazon S3, which costs very little at all, or perhaps even Github pages.