the technologies you mention are well covered by HTML5 and JS today Browser vendors could have decided to choose the pure Javascript route (eg asm.js, SIMD.js)

the technologies you mention are well covered by HTML5 and JS today Browser vendors could have decided to choose the pure Javascript route (eg asm.js, SIMD.js), but for now have decided to throw their weight behind WASM instead: SIMD.js got canned in 2017, whereas SIMD support for WASM shipped in browsers last year. Regarding your second point about embedded devices, I can easily imagine WASM being used in the class of devices targeted by Java ME[1]. I'll of course happily defer to people who actually know something about the topic: If you think there's no legitimate use case for WASM in that space, so be it. [1] https://en.wikipedia.org/wiki/Connected_Limited_Device_Configuration#Typical_requirements https://en.wikipedia.org/wiki/Connected_Limited_Device_Confi...