The landscape of web application development has undergone profound transformations over the past two decades, driven by advances in software frameworks, semantic technologies, and event-driven architectures. The evolution from traditional ASP.NET to ASP.NET Core represents a significant paradigm shift, enabling developers to create scalable, cross-platform, and high-performance applications while integrating modern design patterns, context-aware service discovery, and robust security mechanisms. This paper provides an exhaustive exploration of these transitions, situating the evolution of ASP.NET within the broader context of web service semantics, quality of service (QoS) considerations, and multi-agent frameworks. Drawing on contemporary research and industrial practices, the study critically analyzes tools, strategies, and implementation approaches that enhance web application efficiency and maintainability. Methodologically, this research employs a qualitative synthesis of primary and secondary literature, emphasizing semantic web service discovery, context-awareness, and event-driven system patterns. Findings indicate that the adoption of ASP.NET Core not only optimizes performance but also facilitates seamless integration with hybrid enterprise ecosystems, enhances interoperability, and supports sophisticated data governance mechanisms. The discussion situates these findings within ongoing scholarly debates, examining the balance between legacy system support and modern development imperatives, and offering a forward-looking perspective on the convergence of web service semantics, artificial intelligence-driven optimization, and event-driven operational models. The study concludes by outlining implications for software engineers, enterprise architects, and researchers seeking to harness the full potential of contemporary web frameworks in dynamic, data-intensive environments.

ASP.NET Core, Web Service Semantics, Event-Driven Architecture, Context-Aware Services

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