Azure AI is Microsoft's portfolio of AI services: Azure OpenAI Service (GPT-4, DALL-E), Azure AI Vision (image classification, OCR), Azure AI Language (sentiment, entity extraction, summarization), Document Intelligence (form/invoice/receipt extraction), Azure AI Search (vector + keyword hybrid search for RAG), and Azure Machine Learning (custom model training, deployment, MLOps).
Enterprise Azure AI selection: use Azure OpenAI for general-purpose language AI, Document Intelligence for structured document extraction, AI Vision for image/video processing, AI Search for RAG vector retrieval, and Azure ML for custom model training when pre-trained models don't meet accuracy requirements.