Open Source Summit Korea 2026

As cloud native systems evolve, WebAssembly(WASM) is emerging as a runtime that complements and sometimes challenges container based approaches. With fast startup, strong isolation, and portability, WASM enables efficient and secure event driven workloads.

In this session, we explore how to build and run the systems using WebAssembly on Kubernetes, focusing on SpinKube, an open source project that brings WASM workloads into Kubernetes.

Through a live demonstration, we will deploy and run WASM workloads using SpinKube, highlighting real workflows. We will also compare cold start and execution performance, showing millisecond startup and lower latency than traditional containers. Plus to demonstrate observability using eBPF based telemetry, we enable visibility into runtime behavior without overhead. Attendees will learn how to trace execution, monitor performance, and troubleshoot distributed WASM systems.

Finally, we will talk how WebAssembly improves security and operational efficiency by reducing the attack surface and enabling consistent execution across environments, providing a practical guide for production adoption.