The Internet of Things has rapidly transformed the 21st century, enhancing decision-making processes and introducing innovative consumer services such as pay-as-you-use models. The integration of smart devices and automation technologies has revolutionized every aspect of our lives, from health services to the manufacturing industry, and from the agriculture sector to mining. Alongside the positive aspects, it is also essential to recognize the significant safety, security, and trust concerns in this technological landscape. This chapter serves as a comprehensive guide for newcomers interested in the IoT domain, providing a foundation for making future contributions. Specifically, it discusses the overview, historical evolution, key characteristics, advantages, architectures, taxonomy of technologies, and existing applications in major IoT domains. In addressing prevalent issues and challenges in designing and deploying IoT applications, the chapter examines security threats across architectural layers, ethical considerations, user privacy concerns, and trust-related issues. This discussion equips researchers with a solid understanding of diverse IoT aspects, providing a comprehensive understanding of IoT technology along with insights into the extensive potential and impact of this transformative field.

翻译：物联网已迅速改变21世纪，不仅优化了决策过程，还引入了按需付费等创新消费服务。智能设备与自动化技术的融合彻底革新了生活的方方面面，从医疗健康到制造业，从农业到采矿业。在关注其积极影响的同时，我们亦需正视该技术领域存在的重大安全、保障及信任问题。本章旨在为对物联网领域感兴趣的新入门者提供全面指导，为其未来贡献奠定基础。具体而言，本章讨论了物联网的概述、历史演变、核心特性、优势、架构、技术分类体系，以及主要应用领域的现有实践。针对物联网应用设计与部署中的常见问题与挑战，本章深入剖析了各架构层级的安全威胁、伦理考量、用户隐私问题及信任相关议题。这些讨论使研究者能够全面理解物联网的多元维度，在掌握该变革性技术广阔潜力与深远影响的同时，建立起对物联网技术的系统性认知。