In this tutorial, you'll learn how to set up the vLLM inference engine to serve powerful open-source multimodal models (e.g., LLaVA) - all without needing to clone any repositories. We'll install vLLM, configure your environment, and demonstrate two core workflows: offline inference and OpenAI-compatible API testing. By the end of this lesson, you'll have a blazing-fast, production-ready backend that can easily integrate with frontend tools such as Streamlit or your custom applications.