Cloud-native application development often faces a major hurdle: deep dependency on one cloud provider and its services. This not only hinders developers leveraging new technologies effectively, but also adds substantial complexity in development, testing and distribution within the distributed and Software as a Service (SaaS) landscape. Challenges like integration or mocking tests often prolong development timelines and inflate costs.

WebAssembly Components and an emerging WASI proposal: wasi-cloud, are technologies that reshape application paradigms. They offer a portable, virtualized, cross-language and platform-agnostic approach, allowing developers to reassemble apps for heterogeneous environments and achieve stateless, local-and-prod parity, fast startup applications much easier. This talk will feature a demo of a polyglot component built from multiple languages running on multiple platforms, including CNCF wasmCloud.