In fact, it is quite clear that controllers and boundary classes are actually technology classes, not business classes.
实际上，显然控制类和边界类都是面向技术实现的类，而不是面向业务的类。
2
A business service is a service that a business unit elects to expose at its boundary, interfacing with its clients, partners, or other business units.
业务服务是业务单位选择在其边界公开的服务，通过接口与其客户、合作伙伴或其他业务单位连接。
3
This includes the integration of the computing systems that support business operations and their increasing exposure within and beyond the enterprise boundary through SOA.