Wasm I/O 2025 - Barcelona, 27-28 March Leveraging compilers and runtimes that have been compiled to wasm, we can create wasm from source code directly in the browser. With the Component Model and WASI, we can even author wasm components that make use of the network. Moreover, with service workers, we can run the backend services that comprise a service mesh in the browser as we develop them. In this talk we’ll cover the nuts and bolts of how this is possible with WebAssembly, as well as how these tools enable sharing with links at each phase of the development cycle, from writing your code, to debugging and testing it, to deployments.