The most important thing to me was finding something I could trust without having any concerns about how it would be used or deployed, especially since my organization had only recently begun using cloud-based systems for data storage purposes in general; so this seemed like one of those things we should have been doing all along! Also helpful because there's no need to go through internal approval processes everytime you want access (as opposed to traditional file servers) -- just set up permissions when necessary/possible.
We didn't really use anything special other than standard SharePoint functionality but as mentioned above, being able to store files directly from your computer makes sense regardless if they're documents etc., not needing additional software installed locally at each client site can also help reduce costs significantly!