Core services refer to the essential functions or offerings that a business provides to meet the primary needs of its customers. These services are fundamental to the company's operations and are often what distinguish it from competitors. For example, a bank offers core services like checking accounts and loans, which are crucial for its customers' financial management. In many industries, core services are complemented by additional features or products, known as ancillary services. While these extras enhance the customer experience, the core services remain the foundation of the business. For instance, a hotel primarily provides lodging, but may also offer ancillary services like room service or spa treatments.