Bing Search APIs were retired on August 11, 2025. Any app still calling Bing Web Search or Custom Search directly stopped working that day, and there’s no fallback. Microsoft’s replacement path is Grounding with Bing Search, a tool you attach to an agent in Azure AI Agent Service. A quick note on timing. Azure AI Foundry was renamed Microsoft Foundry in January 2026, and the setup below reflects what Microsoft now calls Foundry Agent Service…