"Resource management is about collecting, monitoring, and leveraging quantitative resources with incomplete information. Any game with complex resource management, that offers compelling choices, will involve imperfect decisions, leading to interesting strategies. In simple English, this means you get money, ore, pylons, or whatever counter, and this has to be used wisely to compete. You never have enough information to make fully informed decisions, and must develop the best strategy you can with imperfect information. This mechanic is prevalent in games of almost every genre."
Source: Gamemechanics Fandom