MMORPG Server Development encompasses technologies and frameworks used to create server-side software for Massively Multiplayer Online Role-Playing Games (MMORPGs). It involves the use of specialized software applications like MaNGOS, TrinityCore, and AzerothCore to emulate game environments, handle player interactions, and manage in-game events. These tools are vital for developers and enthusiasts looking to build or modify MMORPG servers, particularly for games similar to World of Warcraft.