Correct Answer:
Explanation/Reference:
Explanation: Azure Notification Hubs provide an easy-to-use infrastructure that enables you to send mobile push notifications from any backend (in the cloud or on-premises) to any mobile platform.
Configuration steps include:
1. Configure your Notification Hub
2. Connecting your app to the Notification Hub
3. Send notification from your back-end
You can send notifications using Notification Hubs from any back-end using the REST interface. You do this through a script, not a configuration of Mobile Services. Use Java or PHP for the script.
Reference: Getting Started with Notification Hubs
https://azure.microsoft.com/en-us/documentation/articles/notification-hubs-windows-store-dotnet-get-started/#send-notification-from-your-back-end