Lin Clark and Till Schneidereit from Mozilla discuss where WebAssembly came from and where it's going. WebAssembly was inspired by asm.js, a subset of JavaScript that could be compiled from a language such as C++. WebAssembly can take the idea further since it doesn't have the same limitations that JavaScript does.
Lin and Till talk about why even a front-end developer would use WebAssembly, which leads to a discussion on one of the primary use cases of WebAssembly, performance optimization. They also get into the nitty-gritty of WASI, or the WebAssembly System Interface, which allows WebAssembly to be used outside of the browser.