On "Data Analytics" "Business Intelligence" Services :
Don't let these names trick you into thinking these should be some mysteriously complicated government level service.
Rather these are web services, where you send your log files. They save those into a database. And then you have the ability to query your data from their web application.
That's all. No magic. They might have a few good tools for scalability and reporting. But basically these are "store your log files and query online" service.