This document discusses the classification and differences between services and goods. It defines a service as any act of performance that is intangible and does not result in ownership. Services can be classified based on whether they are equipment-based or people-based, how they are delivered, the needs they address, their objectives of profit or non-profit, and their ownership as private or public. Key differences between services and goods are that services are intangible and produced/consumed simultaneously, have more variability in quality, and are perishable unlike goods which can be touched, manufactured separately, and stored.