AI Interview Question #06 - Top 5 RAG Architectures

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## AI Interview Question #06 - Top 5 RAG Architectures Most engineers know basic RAG, but in real-world AI systems, there are multiple RAG architecture patterns you should understand 🚀 In this short, I explain the **Top RAG Architectures** in a simple architecture-style format 👇 🔹 **Hybrid RAG** Combines dense vector search with sparse keyword search like BM25. Best when you want both semantic meaning and exact keyword matching. 🔹 **GraphRAG** Uses a knowledge graph to understand relationships between entities. Best for relationship-heavy data like organizations, people, projects, and connected knowledge. 🔹 **Agentic RAG** Uses agents to plan retrieval steps and call multiple tools like vector search, web search, or SQL databases. Best when retrieval needs reasoning, planning, and multiple data sources. 🔹 **Corrective RAG (CRAG)** Checks and grades retrieved documents before generating the final answer. Best when you want better reliability and fewer wrong answers. 🔹 **Multimodal RAG** Retrieves information from text, images, charts, and tables. Best for documents, reports, diagrams, PDFs, and visual data. ⚡ **Quick rule:** Hybrid RAG = semantic + keyword search GraphRAG = relationship-based knowledge Agentic RAG = retrieval with planning Corrective RAG = retrieval with validation Multimodal RAG = text + image + table understanding 💡 **Easy way to remember:** Basic RAG retrieves documents. Advanced RAG retrieves, reasons, validates, and works across multiple data types. If you're preparing for **AI interviews**, **Azure AI**, **RAG architecture**, **LLM apps**, or **Generative AI system design**, this is a must-know topic! -------------------------------------------------- 📺 **YouTube:** @casa-cloud 🌐 **Website:** https://casacloud.com/ ☁️ **Casa Cloud** 💻 **GitHub** https://github.com/casa-cloud 🔗 **LinkedIn** https://www.linkedin.com/in/alokadhao/ 💬 **Discord** https://discord.gg/pgXM3Aya -------------------------------------------------- 🚀 Get ready to level up your **Azure AI**, **Generative AI**, and **cloud engineering** skills with CasaCloud. Learn practical AI concepts, interview questions, and real-world architecture in a simple and powerful way. -------------------------------------------------- #AI #RAG #HybridRAG #GraphRAG #AgenticRAG #CorrectiveRAG #MultimodalRAG #AzureAI #AzureOpenAI #GenerativeAI #LLM #VectorSearch #AIArchitecture #AIInterviewQuestions #CasaCloud #Shorts