[no_wizard]

In a phase: code sharing.

Say you are a C# developer and there is a C / C++ / Rust thing you want to use as a dependency.

Well, WASM is your interop layer. Same with Node.js, Deno, Go etc. You can start to share alot more code with a solid interop layer that WASM presents.

[pjmlp]

Just like CLR has been doing for 20 years.

IBM and Unisys almost since the 1960's, depending on which model we are talking about.

[int_19h]

wasm does not have a solid interop layer, especially compared to past attempts such as CLR. What you get at the moment is more or less the C FFI, but more awkward to use because of the sandbox.