In this talk, we will explore the transformative potential of WebAssembly (WASM) in enhancing event-driven deployments. We will begin by examining the current state of WebAssembly in conjunction with Kubernetes, Knative, and KEDA, providing an overview of its capabilities within the CNCF ecosystem. We will focus on building autoscaling event processing systems, highlighted by a practical example using Kafka. We will also discuss the benefits and challenges associated with this approach. Join us to discover the exciting possibilities that WASM offers now and in the future to create more efficient and faster large-scale event processing systems.