Wasm I/O 2025 - Barcelona, 27-28 March Slides: https://2025.wasm.io/slides/real-world-wasi-components-wasmio25.pdf In this talk, we’ll explore the power and versatility of WASI components through a practical implementation of the Content Authenticity Initiative (C2PA) API. Our journey will showcase how a single WASI component can be leveraged across diverse environments, demonstrating the true potential of WebAssembly’s write-once-run-anywhere promise. Key highlights: 1. Introduction to our previous use of WASI components at Adobe. 2. Deep dive into a custom WASI component based on the C2PA API. 3. Demonstration of the component’s integration with wasmCloud using wasi-http . 4. Demonstration of CLI application creation using wasi-cli 5. Insights into developing JavaScript and Node.js SDKs for broader accessibility. This presentation will offer valuable insights for developers interested in WebAssembly’s cross-platform capabilities, the Content Authenticity Initiative, and the future of SDKs with WASI.