A Comprehensive Analysis of Cloud Service Models: IaaS, PaaS, and SaaS in the Context of Emerging Technologies and Trend

Cloud computing has become a pivotal technology in modern IT infrastructures, offering scalable, on-demand resources across various service models: Infrastructure as a Service (IaaS), Platform as a Service (PaaS), and Software as a Service (SaaS). This paper comprehensively reviews these service models, highlighting their key functionalities, major providers, and specific use cases. Through a comparative analysis, we examine the differences in management, cost implications, scalability, and user control, providing insights into the advantages and disadvantages of each model from both provider and user perspectives. Furthermore, the paper discusses emerging technologies such as AI, machine learning, and edge computing and their impact on cloud service models. Recent market trends, security concerns, and compliance developments are explored to illustrate the growing importance of secure cloud adoption. Finally, real-world case studies are presented, showcasing successful implementations of IaaS, PaaS, and SaaS and the lessons learned from these examples. The paper concludes by addressing challenges like data privacy, vendor lock-in, and interoperability while offering predictions on the future evolution of cloud service models and potential innovations.