To promote and sustain the future of our society, the most critical challenge of contemporary software engineering and cloud computing experts are related to the efficient integration of emerging cloudification and DevOps practices in the development and testing processes of modern systems. In this context, we argue that SBST can play a critical role in improving testing practices and automating the verification and validation (V&V) of cloudification properties of Cloud Native Applications (CNA). Hence, in this paper, we focus on the untouched side of SBST in the cloud field, by discussing (1) the testing challenges in the cloud research field and (2) summarizing the recent contributions of SBST in supporting development practices of CNA. Finally, we discuss the emerging research topics characterizing the cloudification perspectives of SBST in the cloud field.

Hardware-in-the-loop simulation has a traditional role in the development of vehicle management systems for system integration and system verification and validation. Additional importance of applying this methodology to the development of photonics based vehicle management systems results from the lack of maturity of photonics and differences between photonics and electronics technology. The unique characteristics of fly-by-light sensors and effector control interfaces place additional demands on the integrated system test requirements and establish the need for long duration evaluation in a flight environment. It is suggested that the durability issue can be partially satisfied by hardware-in-the-loop evaluation during extended mission simulation using operational mockups of the utility subsystems to provide realism to the environmental exposure of the photonics components. lntroductioq -Following the advent of fly-by-wire flight control systems, the growing trend is to integrate the basic airplane control functions into one vehicle management system (VMS). Advanced vehicle management systems achieve improved performance and reductions in cost, weight and volume by application of this integration methodology. The methodology includes (1) functional integration as demonstrated by integrated flight and propulsion control, (2) resource integration where sensors or processors are shared by multiple functions, and (3) physical integration where the computing resources with the associated input/output processing and power supplies are located in one site using a single enclosure. The advanced vehicle management system includes combinations of flight critical and non-critical functions and the design is required to provide functional protection and avoidance of fault propagation The process of integration results in a greater degree of scope of these simulations to include all vehicle management system functions.Application of photonics technology to the vehicle management system is the next major technology enhancement. Replacement of the signal wires with fiber, and the use of passive photonic sensors achieves robustness relative to the electromagnetic environment and reduces the weight and cost. While flyby-light development has focused on primary flight controls and propulsion control, its future application to the vehicle utility subsystems will result in even greater benefits. The weight savings resulting from this technology will force its early introduction for new aircraft and for upgrades to existing aircraft. Unlike the introduction of electronics, which evolved through simple non-critical applications, such as yaw-dampers and autopilots, over many years, fly-by-light is expected to be introduced much more rapidly. While in-service flight test of components and subsystems is an important element in proving the viability of photonics for the vehicle management system application, it is expected that extended duration ground test will be the major approach to demonstration of flightworthiness. Piloted hardwar...

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