The explosions of Internet of Things industry have been bringing more and more smart devices (SDs) into business\r\nand people�s daily life. This creates new opportunities to build applications that better integrate real-time state of\r\nthe physical world and requires agility for the software to accommodate customers� requirements. Nevertheless,\r\ndevices are usually provided by different manufacturers, and applications are independently constructed based on\r\ntheir own infrastructures with little interoperability. Web of Things concept has enabled the interoperability\r\nbetween devices by RESTful web service in a light-weight way; however, it make less efforts to discuss how to\r\nintegrate devices into complex business environment. Service-Oriented Architecture and Business Process\r\nManagement approach are becoming applicable to embedded real-world devices and provide flexible service\r\ncomposition. However, it is based on WS-* web service specification which is too heavy and complex for devices\r\nand not compatible to RESTful style. In such situation, integrating device into business application with simplicity\r\nand providing agility composition of service based on device are significant challenges. We propose a web-based\r\ntwo-layered integration framework that enables SD to integrate with each other via light-weight interface and\r\nother back-end applications into agile business process. A real-life use case on elderly care is studied in detail\r\nbased on the framework.
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