WebAssembly, known as Wasm, is now becoming more accessible to ordinary developers with the release of a stable WASI 0.2 standard and the component model. This marks the beginning of a potential revolution in software development as practical use cases are being explored and the technology is gaining traction beyond a niche group of enthusiasts. At a recent conference on Wasm at KubeCon EU, the potential of Wasm to change the way new code is written was showcased, indicating that a tipping point may be near.
The stability of WASI 0.2 and the component model allows for Wasm components written in different languages to communicate using a common standard, sparking interest in exploring practical applications. For example, IoT software vendor Machine Metrics demonstrated the use of Wasm at the edge to analyze high-volume data in resource-constrained environments. The CRI-O project showcased how containers, Kubernetes, and Wasm can interoperate, while the Bytecode Alliance discussed the potential of Wasm and the design of WASI and the component model.
Despite the gap between the vision of Wasm and its practical application, progress is being made as popular languages such as Python now support Wasm as a target. Wasm-focused vendors, including Cosmonic, draw parallels to Docker’s impact on container technology, highlighting the potential for Wasm to revolutionize software development. While Wasm has not yet had its “Docker moment,” enthusiasm for the technology at events like Cloud Native Wasm Day indicates that a breakthrough may be on the horizon.
The experience of using Wasm remains different from traditional development techniques, posing challenges for developers accustomed to existing tools and technologies. Interoperability with existing systems, such as databases, applications, and devices, is essential for Wasm to achieve widespread adoption. Despite advancements like WASI 0.2 and support for HTTP-based APIs, more work is needed to bridge the gap between Wasm and established technologies.
The potential of Wasm to enhance open-source software by breaking language barriers raises questions about maintenance sustainability. Hayes, from the Bytecode Alliance, sees Wasm as a significant moment in computing that could revolutionize the industry. While uncertainties remain, the steady growth of support for Wasm and WASI suggests that after years of development, the technology may soon experience a breakthrough. The careful navigation of challenges and the accumulation of industry support position Wasm as a promising advancement in software development.
