Operations management involves organizing a company's resources to transform inputs into outputs through production. The three main functions of any organization are marketing, production/operations, and finance/accounting. Operations managers are responsible for planning, organizing, staffing, leading, and controlling a company's productive activities. Their key decisions include designing products and processes, managing quality, determining capacity and location, and scheduling production. As the economy has shifted from manufacturing to services, operations management now applies to both tangible goods and intangible services. Improving productivity through more efficient use of resources is an ongoing challenge for operations managers.