A service has a provider, can have one or more consumers, and produces effects that are of value to its consumers.

一个服务有一个提供者，一个或多个消费者，并产生对消费者有价值的效果。

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Service interfaces define the goals, needs, and expectations of user participants, as well as the value propositions, capabilities, and commitments of provider participants.

服务接口定义了用户参与者的目标、需要以及期望，以及提供商参与者的价值预期、功能与承诺。

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SOA has made it possible for enterprises to take part in an ecosystem in which a business can be both a service provider as well as a service consumer, thus enabling a SOA-oriented value network.

在生态系统中，一项业务既可以是服务提供者，也可以是服务使用者，SOA已经使企业参与生态系统成为可能，可以实现一个面向SOA的价值网络。

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It is another move to be the kind of value-added service provider, like IBM, the company hopes to be.

FORBES: HP's Push To Higher-Value Applications

As an example, one financial service provider I follow has lots of what I consider to be low value tweets.

FORBES: Finance Firms are Going to Twitter and Social Media With Mixed Results

China Mobile, the largest mobile service provider in the world, derives most of its revenues from mobile services as well as value added services like data, SMS, mobile Internet, voice mail and other features.

FORBES: Rural China Gets Smartphones, China Mobile Goes To $58