服務，意思是指履行職務，為他人做事，並使他人從中受益的一種有償或無償的活動，不以实物形式而以勞動的形式滿足他人某種特殊需要。

In the contexts of software architecture, service-orientation and service-oriented architecture, the term service refers to a software functionality, or a set of software functionalities with a purpose that different clients can reuse for different purposes, together with the policies that should control its usage.

An act of help or assistance

发球是网球比赛中一分的开始。

Periodic maintenance on a car or machine

In Anglican church music, a service is a musical setting of certain parts of the liturgy, generally for choir with or without organ accompaniment.

Performance of duties or provision of space and equipment helpful to others

The act of mating by male animals

Work for or be a servant to

Devote (part of) one's life or efforts to, as of countries, institutions, or ideas

Be used by; as of a utility

Provide (usually but not necessarily food)