良好的可扩展性，ssh主流技术有强大的用户社区支持它，所以该框架扩展性非常强，针对特殊应用时具有良好的可插拔性，避免大部分因技术问题不能实现的功能。
3.　　良好的可维护性，业务系统经常会有新需求，三层构架因为逻辑层和展现层的合理分离，可使需求修改的风险降低到最低。随着新技术的流行或系统的老化，系统可能需要重构，ssh构架重构成功率要比其他构架高很多(Good scalability, SSH mainstream technology has strong user community support, so the framework has strong scalability, and has good plug and play for special applications, avoiding most of the functions that can not be achieved due to technical problems.
3., good maintainability. Business systems often have new needs. The three tier architecture reduces the risk of demand modification to a minimum due to the reasonable separation of logic layer and presentation layer. With the popularity of new technology or the aging of the system, the system may need refactoring, and the success rate of SSH architecture reconfiguration is much higher than that of other architectures.)