Efficiency refers to the ability to achieve maximum productivity with minimum wasted effort or expense. It is a crucial concept in various fields, including business, engineering, and environmental science, where optimizing processes can lead to significant cost savings and improved outcomes. By focusing on efficiency, organizations can enhance their performance and sustainability. In practical terms, efficiency can be measured through various metrics, such as output per hour or energy consumption per unit of production. Tools like Lean Manufacturing and Six Sigma are often employed to identify inefficiencies and streamline operations, ultimately leading to better resource management and increased profitability.