There are many different definitions of operations management, but overall they make a similar point. Here are a few for your reference:
- "Operations management researches efficiencies in planning, organizing, and supervising in production and manufacturing. It is delivery-focused, ensuring that an organization successfully turns inputs to outputs in an effective manner. The inputs themselves could represent anything from materials, equipment, and technology to human resources such as staff or workers." - MIT Sloan School of Management
- "Operations management is the business function responsible for managing the process of creation of goods and services. It involves planning, organizing, coordinating, and controlling all the resources needed to produce a company’s goods and services. Because operations management is a management function, it involves managing people, equipment, technology, information, and all the other resources needed in the production of goods and services." - InformIT
- "Operations management is the administration of business practices to create the highest level of efficiency possible within an organization. It is concerned with converting materials and labor into goods and services as efficiently as possible to maximize the profit of an organization. Operations management teams attempt to balance costs with revenue to achieve the highest net operating profit possible." - Investopedia