Has anyone got a decent, plain English explanation of what XE can do for you? My eyes glaze over somewhat reading the below:
https://technet.microsoft.com/en-us/library/bb630354(v=sql.105).aspx

It sounds like it may be useful but I've really no way of knowing from that...for instance the heading 'Correlating request activity with Windows ETW logs' the example is in English but I'm buggered if I know what it means, it seems to be saying XE can help you find out that slow disk reads are a physical I/O problem. Which solves what? Sorry to be dense and all.