An Ark Dedicated server is a server used to play the online game Ark: Survival Evolved. The server is hosted by a company or individual, and players connect to it to play the game. A dedicated server usually has better performance and stability than a shared server, and can be customized to the player's needs.
A dedicated host is a server that is used only for hosting an ARK game. A non-dedicated server is a server that can be used for other purposes in addition to hosting an ARK game.