That's correct!

Edit: That's _mostly_ correct! You don't need Envoy to have JS/TS running in a browser call your handler. If I'm being really picky, though, in that case the browser and your handler would need to use either the gRPC-Web or Connect protocol, not the backend gRPC-over-HTTP/2 protocol. Any `connect-go` handler you write supports all three protocols by default, so the short answer is still "yes!"