The term "ideal solution" refers to a perfect or optimal answer to a problem, challenge or need. It is an idealized concept that represents the best possible outcome in any given situation and it takes into account all relevant factors such as cost, feasibility, practicality, effectiveness, efficiency, sustainability, etc., while minimizing negative consequences. An ideal solution would be one that meets everyone's needs and expectations, and solves a problem or satisfies a desire without causing harm to anyone or anything.