Finally figured out what WebAssembly is

You can build web apps by using languages other than JS for better performance. You could use C/C++/Rust if you wanted to build something like a video editor, collaborative editor, VR/AR app, etc.

Anything that needs low latency and high performance. Figma actually uses WebAssembly for their web app. If you want the performance of a desktop app to be able to run in the browser use WebAssembly. Downside is that it's more dev work to set up.

Resources:

• https://blog.bitsrc.io/whats-wrong-with-web-assembly-3b9abb671ec2
• https://dev.to/renannobile/explain-webassembly-like-im-five--3ofe
• https://webassembly.org/docs/use-cases/