Explore a practical application of WebAssembly (WASM) in cloud computing through this conference talk. Dive into the journey of Krustlet, a Kubernetes Kubelet implementation for running WASM modules, and discover the challenges and lessons learned in implementing full Kubernetes functionality for WASM. Learn about experiments like WAGI, examine the rough edges and gaps in using WASM in the cloud, and gain insights into the steps needed for WASM to become mainstream. Covering topics such as Java VM, containers, runtimes, language choice, optimization, and different execution methods, this talk also addresses community fracturing, developer experience, and OCI integration. Gain valuable knowledge about the current state and future potential of WASM in cloud-native applications.