Microsoft Semantic Kernel is an open-source SDK that integrates large language models with conventional programming languages, enabling developers to build AI applications with enterprise-grade capabilities. This framework provides automatic function calling, memory management, planning capabilities, and plugin architecture for extending AI applications. Key features include semantic functions, native functions, planner components, memory stores, and connector abstractions. Perfect for enterprise AI applications, chatbot development, content generation, and business process automation. Supports multiple programming languages including C#, Python, and Java, with connectors for Azure OpenAI, OpenAI, and Hugging Face models.