In our app (Azure hosted) we produce invoices, these have to be injected into an on premise accounting software. It is not possible to host an API that would be reachable from the Azure to post the invoices to.
Is it possible to create an exe that runs on-premise an that get's triggered by Azure Q-messages like WebJobs can ? Once triggered retrieve the invoice from a blob-storage-object.
Other suggestions are also welcome.
One important thing I want to mention is that even WebJobs poll the queue at predetermined interval (I believe the default is 30 seconds). Azure Queues don't support triggering mechanism like you think.
What you want to do is entirely possible though. What you could do is write a Windows Service, that essentially wakes up at a predetermined interval and checks for messages in the queue. If it finds messages, then it processes those messages otherwise go back to sleep again.