Dependability of open systems

This presentation demonstrates an innovative way to build a target system maintaining its dependability in an open system environment, where the boundary of the target system is blurred in the sense that interaction with its surrounding environment is always altered due to several environmental changes such as business objectives, stakeholders' requirements, regulations, and performance requirements. What we call open systems is inherently providing such a nature, and recent IT systems particularly including cloud-based services are categorized in it.