Kong Gateway has introduced WebAssembly (Wasm) support, allowing for the development and deployment of Wasm filters using languages like Rust and Go. This feature enables the extension of Kong Gateway with different languages, supporting more languages over time without additional operational overhead. WebAssembly is a specification for sandboxed language runtimes, providing a binary format for compiled bytecode and a multi-language virtual machine, with APIs for embedding the VM into host applications. Kong Gateway 3.4 supports WebAssembly extensions as Wasm filters, which are modules implementing event handlers for request lifecycle stages, using the Proxy-Wasm SDK. These filters can perform various proxy operations and be configured in flexible filter chains for Routes and Services. Developers are encouraged to experiment with Wasm filters, share their creations, and provide feedback to improve the feature. While the WebAssembly support is currently in beta, it aims to become generally available with community input, making Kong Gateway more versatile and expandable with the evolving Wasm ecosystem.