I am a big fan of reactive programming, and love things like RX/Akka, and service buses and things like that, and I have been meaning to try the new (preview) Azure EventGrid service out for a while.
To this end I have given it a little go where I hooked it up to a Azure Function and written a small article about it here : https://www.codeproject.com/Articles/1220389/Azure-EventGrid-Azure-Function-demo
Sacha's Blog 