OpenAI's launch of ChatGPT marked the start of the generative AI era, leading to widespread adoption across various industries. As enterprises shift from prototyping to productionizing large language model applications, they increasingly prefer self-hosted solutions over third-party services. To address this need, LangChain has integrated NVIDIA NIM, a set of microservices designed to streamline the deployment of generative AI at scale. NVIDIA NIM supports various AI models and is built on robust inference engines, allowing enterprises to deploy AI applications confidently, both on-premises and in the cloud. Notably, the self-hosted nature of NIM ensures data privacy, particularly beneficial for applications handling sensitive information. LangChain offers an integration package for using NIM, facilitating the development of AI applications like retrieval-augmented generation (RAG) systems. The integration also supports advanced retrieval methods, such as hypothetical document embeddings, to enhance search query accuracy. This capability is demonstrated through a step-by-step example using LangSmith documentation, showcasing how to build a RAG application with NVIDIA NIM and LangChain frameworks.