起初，系统间数据接口是点对点的，每个系统都有自己的消息格式。
Initially, data interfaces between systems were point-to-point, with each system having its own message format.
SOA在行业中获得了大量支持，因为它将企业解决方案视为服务的联合，这些服务通过定义其服务接口和数据格式的明确指定的契约进行连接。
SOA is gaining much support in the industry because it views enterprise solutions as federations of services connected by well-specified contracts that define their service interfaces and data format.
导出和导入都需要一个接口定义来描述交换数据的确切格式。
Both the export and the import need an interface definition that describes the exact format of the data that is exchanged.
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