Window services are easy to build these days. There are quite a few excellent libraries that can make building a windows service very easy. Look at TopShelf.

Window services are easy to build these days. There are quite a few excellent libraries that can make building a windows service very easy. Look at TopShelf. It's one of the best and one of the most popular libaries out there. Basically take your existing console app code and just drop it into a few methods. Easy to debug as well, since you can the same windows service as a console app while debugging. Once you build out your service, it will act as a SignalR backend that will then communicate to a Signalr client code in a browser. You can use .NET core to make all the above run cross-platform. In your case, for IOT devices powered by things like the RaspberryPi.