Context: New software development patterns are emerging aiming at accelerating the process of delivering value. One is Continuous Experimentation, which allows to systematically deploy and run instrumented software variants during development phase in order to collect data from the field of application. While currently this practice is used on a daily basis on web-based systems, technical difficulties challenge its adoption in fields where computational resources are constrained, e.g., cyber-physical systems and the automotive industry. Objective: This paper aims at providing an overview of the engagement on the Continuous Experimentation practice in the context of cyber-physical systems. %To provide an understanding of what is the state-of-the-art of the Continuous Experimentation practice in the context of cyber-physical systems, and what is the practitioners' feedback about this practice. Method: A systematic literature review has been conducted to investigate the link between the practice and the field of application. Additionally, an industrial multiple case study is reported. Results: The study presents the current state-of-the-art regarding Continuous Experimentation in the field of cyber-physical systems. The current perspective of Continuous Experimentation in industry is also reported. Conclusions: The field has not reached maturity yet. More conceptual analyses are found than solution proposals and the state-of-practice is yet to be achieved. However it is expected that in time an increasing number of solutions will be proposed and validated.

中文翻译：

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连续实验和网络物理系统挑战：文献综述和工业视角

背景：新的软件开发模式正在出现，旨在加速交付价值的过程。一种是持续实验，它允许在开发阶段系统地部署和运行仪器化的软件变体，以便从应用程序领域收集数据。虽然目前这种做法每天都在基于 Web 的系统上使用，但在计算资源受限的领域，例如网络物理系统和汽车行业，技术困难对其采用提出了挑战。目标：本文旨在概述网络物理系统背景下的持续实验实践。%为了了解网络物理系统背景下的持续实验实践的最新技术，以及从业者对这种做法的反馈是什么。方法：进行了系统的文献综述以调查实践与应用领域之间的联系。此外，还报告了一个工业多案例研究。结果：该研究展示了当前关于网络物理系统领域持续实验的最新技术。还报告了当前工业中持续试验的前景。结论：该领域尚未成熟。发现的概念分析比解决方案建议多，实践状态尚未实现。然而，预计随着时间的推移，将会提出和验证越来越多的解决方案。进行了系统的文献综述以调查实践与应用领域之间的联系。此外，还报告了一个工业多案例研究。结果：该研究展示了当前关于网络物理系统领域持续实验的最新技术。还报告了当前工业中持续试验的前景。结论：该领域尚未成熟。发现的概念分析比解决方案建议多，实践状态尚未实现。然而，预计随着时间的推移，将会提出和验证越来越多的解决方案。进行了系统的文献综述以调查实践与应用领域之间的联系。此外，还报告了一个工业多案例研究。结果：该研究展示了当前关于网络物理系统领域持续实验的最新技术。还报告了当前工业中持续试验的前景。结论：该领域尚未成熟。发现的概念分析比解决方案建议多，实践状态尚未实现。然而，预计随着时间的推移，将会提出和验证越来越多的解决方案。该研究介绍了当前在网络物理系统领域进行持续实验的最新技术。还报告了当前工业中持续试验的前景。结论：该领域尚未成熟。发现的概念分析比解决方案建议多，实践状态尚未实现。然而，预计随着时间的推移，将会提出和验证越来越多的解决方案。该研究介绍了当前在网络物理系统领域进行持续实验的最新技术。还报告了当前工业中持续试验的前景。结论：该领域尚未成熟。发现的概念分析比解决方案建议多，实践状态尚未实现。然而，预计随着时间的推移，将会提出和验证越来越多的解决方案。