Microsoft’s Azure Core Upstream team released an open-source Rust library called Hyperlight for executing small embedded functions using hypervisor-based protection. Hyperlight Wasm, a virtual machine, “micro-guest,” was voted into the CNCF Sandbox program. The concept emphasizes performance and compatibility, offering high-level, performant abstractions across different execution environments while still prioritizing security and efficiency. By combining Hyperlight with WebAssembly, fast application start times can be achieved with minimal idling instances. Hyperlight enables running various languages in a hardware-protected, widely-compatible environment, enhancing developer flexibility and security. The project, licensed under Apache 2.0, encourages community involvement in fostering innovation and collaboration.
https://opensource.microsoft.com/blog/2025/03/26/hyperlight-wasm-fast-secure-and-os-free/