Real-Time Fraud Detection with Azure Cosmos DB | Divakar Kumar | Azure Cosmos DB Conf 2026

Divakar Kumar (Microsoft AI MVP, Technical Architect at Flyerssoft) demonstrates three architectural patterns for building real-time decision systems with Azure Cosmos DB: • Event Sourcing with hierarchical partition keys — immutable audit trails, temporal queries, and scalable event storage • Change Feed — push-based event notifications that trigger materialized view updates without polling • Event-Driven Integration — capturing domain events from existing databases (PostgreSQL, Oracle, MongoDB) through Azure Service Bus while keeping source systems authoritative Through a live fraud detection demo that combines traditional ML for clear-cut cases and Agentic AI for uncertain scenarios, you'll see how these patterns enable fast decisioning, complete auditability, and seamless integration across heterogeneous data sources. 👤 Connect with Divakar Kumar 📝 Divakar Kumar is a Microsoft MVP in AI and a Microsoft Certified Trainer (MCT), working as a Technical Architect at Flyerssoft. He actively shares his knowledge through blogs, talks, and training sessions, empowering developers to harness the potential of AI in real-world applications. 💼 https://www.linkedin.com/in/divakar-kumar/ ✍️ https://iamdivakarkumar.com 🌐 https://iamdivakarkumar.com 🏆 https://mvp.microsoft.com/MVP/profile/01f5e76b-d587-4e87-aee1-a3e52bda2c98 🎤 https://developer.azurecosmosdb.com/conf/#speaker/divakar-kumar --- Azure Cosmos DB Conf 2026 is a free virtual developer event focused on building modern, scalable applications with Azure Cosmos DB. Sessions feature Microsoft engineers, product teams, and members of the global developer community sharing real-world solutions and best practices. Originally streamed on April 28, 2026 | 9:00 AM – 2:00 PM PT 🔗 Useful Links • Explore all sessions on-demand — https://aka.ms/CosmosConf26Playlist • Take the Cosmos Conf Challenge. First 500 to complete gets a voucher for 100% free certificate exam for DP-420 — https://aka.ms/CosmosDBConfChallenge •