什么是服务？
（1）根据 Jammes Fitzimmons在Service Management中的观点，A service is a time-perishable,intangible experience performed for a customer acting in the role of co-producer.
服务和商品的区别
Service vs Good
Service-good
趋势
（1） 纯制造业越来越少，而服务产业处于上升趋势。
（2）服务变得越来越复杂。
服务系统（Service System）
（1）Service System is a IT software system that realizes business services.
（2）IT-enabled business service ：When business service is provided with services systems, it is IT-enabled。
（3）
differences and commons
垂直服务和水平服务
（1）There are many services that can be utilized simultaneously(同时的) and independently.They are called Vertical Service.
（2）Vertical Services can be constructed with many reused cross-industry common services,these services are called Horizontal Service.
vertical&&horizontal service
服务仓库（Service inventory）
service inventory
