One of our Melbourne clients is a company called SYA. We manage Office 365 and SharePoint online for SYA.
When we met SYA, they were spending a lot on email and a share drive hosted accessed via Citrix. 95% of the staff are volunteers, and anytime someone needed to access the file share, it was time consuming and costly. Also it was quite slow, and the file share had thousands of documents that were difficult to find.