Azure OpenAI Service is Microsoft's enterprise deployment of OpenAI models — including GPT-4o, DALL-E 3, Whisper, and embeddings — within Azure's cloud infrastructure with enterprise-grade security, compliance, and data privacy controls. Unlike the public OpenAI API, Azure OpenAI ensures data never leaves a company's Azure environment, with full compliance certifications for healthcare, finance, and government. Enterprises building AI applications on Azure infrastructure choose Azure OpenAI Service for the combination of OpenAI model capability with Azure's enterprise reliability, SLA commitments, and seamless integration with existing Azure AI and data services.