Cloud computing and IoT security are pivotal technologies that have reshaped the IT landscape. Leading tech giants like Google, Microsoft, and Amazon have harnessed their potential, continually enhancing these services. Despite their increasing user bases, these technologies face significant hurdles, with security emerging as the foremost challenge. This paper delves into the security aspects of both cloud computing and IoT services, encompassing security components, processes, threats, and real-world examples of security-related technologies. We also explore the impacts, including benefits, limitations, and future potential of cloud computing and IoT security services. In our exploration, we define cloud computing and the Internet of Things (IoT) to provide a foundational understanding of these technologies. We then investigate their real-world applications, highlighting their relevance and ubiquity in various domains. The core of this paper revolves around the discussion of security issues in cloud computing and IoT. For IoT, we dissect security components, processes, and threats, offering real-world technology examples to illustrate their significance. Similarly, for cloud computing, we delve into its security components, processes, and threats while showcasing practical applications of security technologies. The impact section assesses the benefits of cloud computing and IoT security. It also candidly addresses issues, limitations, and challenges associated with these technologies, offering insights into potential future advancements. This comprehensive study underscores the significance of security in the domains of cloud computing and IoT, offering a valuable resource for both practitioners and researchers. As these technologies continue to evolve, understanding their security implications is crucial for harnessing their full potential.