In this Make IT Mesh Video Podcast, Tetrate engineer Yaroslav Skopets  describes new tooling that makes it easier for end users to build  extensions to the edge and service proxy, Envoy. 

WebAssembly and the  GetEnvoy toolkit available from getenvoy.io will help organizations  looking to integrate Envoy with existing infrastructure (e.g.,  authorization, authentication, logging) that wouldn't be available out  of the box. 

Historically, Envoy extensibility hasn't been very  accessible. Developers needed to code in C++, link to the Envoy binary,  and maintain their custom builds. Wasm and the new SDK for Rust are the  answer to this problem. Tia Louden, content writer for Tetrate,  moderates.

Music Credits:
Blippy Trance by Kevin MacLeod
Link: https://incompetech.filmmusic.io/song/5759-blippy-trance
License: http://creativecommons.org/licenses/by/4.0/