Retrieval-augmented generation (RAG) is a technique that enhances large language models (LLMs) by integrating them with external knowledge bases, allowing them to access and utilize domain-specific information without needing to retrain the entire model. This approach enables LLMs to retrieve contextually relevant data before generating responses, improving accuracy and relevance. Ragie, a fully managed multimodal RAG-as-a-service platform, facilitates this process by providing developer-friendly APIs and SDKs for seamless ingestion of various data formats and offers connectors for popular data sources like Google Drive, Confluence, and OneDrive. The tutorial demonstrates how to use Ragie to automatically ingest documents from Google Drive and employ the Ragie Node.js SDK to retrieve document chunks and generate responses using OpenAI models. This method allows businesses to maintain an up-to-date knowledge base without manual intervention and is particularly useful for applications such as customer support and enterprise search, providing a scalable and cost-effective solution for managing large volumes of data.