前两种方法本质上是转换现有的COBOL应用程序并将它们作为服务提供者使用。
The first two approaches essentially transform existing COBOL applications and make them available as service providers.
业务操作是围绕一组服务设计的，而这要求对当前IT系统进行再工程，并将其作为服务提供者加以集成。
Business operations are designed around a set of services that require current IT systems to be re-engineered and integrated as service providers.
将消息传递中间件作为服务提供者和使用者间的通信通道时，性能还将进一步受到其他会带来干扰的消息中介的影响。
While using messaging middleware as the communication channel between service providers and consumers, performance is further decreased by the intervening message mediations.
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