This document classifies services based on 8 criteria: 1) tangibility of the service process, 2) recipient of the service, 3) place and time of delivery, 4) customization vs standardization, 5) nature of relationship with customers, 6) balance of demand and supply, 7) role of facilities/equipment/people, and 8) method of delivery. It provides examples of common services that fall under each classification for these 8 criteria.