Serverless stream processing with Apache Kafka is a powerful yet often underutilized field that can be leveraged for building GenAI apps faster using Microsoft's Azure Functions, ksqlDB, and Confluent's sink connector. These tools provide a powerful and easy-to-use set of tools that can handle even the most complex workloads. By leveraging Kafka Connect to trigger Azure Functions, developers can create stateless event stream processing applications or use ksqlDB for long-running stateful compute. The integration discussed in this blog uses ksqlDB queries to complete the application, relying on its high scalability and serverless capabilities. Microsoft's Azure Functions provide a Function as a Service (FaaS) component that accelerates serverless application development, making it easy to process and react to events. The Azure Functions Kafka extension enables customers to detect and respond to real-time messages streaming into Kafka topics or write to a Kafka topic through the output binding. By using the Azure Functions Kafka extension, developers can create stateless applications with high throughput and scalability, while also providing at-most-once processing guarantees. The integration of ksqlDB and Azure Functions offers a powerful serverless one-two punch that enables developers to build efficient event streaming applications on Confluent Cloud.