It's already used for many applications, including smart contracts, function-as-a-service services, and for running applications such as Photoshop in Chrome. I

It's already used for many applications, including smart contracts, function-as-a-service services, and for running applications such as Photoshop in Chrome. It's also significantly faster than Javascript for some workloads, while still providing the ability to run untrusted/potentially insecure code in a sandbox.