Definition of service, marketing point of view

Definition of service, Marketing point of view

Definition of Service: 

"without take ownership of any physical element serve, labor, professional skill, facilities, networks, and systems with exchange of money, time and effort to customers expect to obtain value from access"

"Services are an economic activities offered by one party to another, most commonly employing time-based performances to bring about desired results in recipients themselves or in object or other assets for which purchases have responsibility" (source: service marketing by chripstoper Lovelock)

Elaborate

Service As a-
Economic Activities: In marketplace, buyer and seller exchange of value

Performance: perform the activity; seller perform activity for buyer

Result: variety of value-creating element, without taking ownership of physical element, exchange money,                  time and effor