Good for storage, but not easy to use beyond that

Our organization has been using Box for about 5 years now. We use it across the entire organization though not consistently, unfortunately. The biggest drawback to using it more often and more frequently is the ease with which documents can be edited at the same time by multiple users in Google Docs, for example. The ability to control who shares documents with whom is the biggest plus for us. Unfortunately, Box does not provide HIPAA compliance unless you are at a certain contract level or user size. We are a high-growth company meaning we currently share folders with outside users during the acquisition process. After acquisition, these users transition to employees and it is not easy to transition their accounts from an outside user to a managed user, especially when email addresses change.