Microsoft 365 and the Outlook add-in
A stored document opens directly in Word, Excel or PowerPoint, and saving returns it to DocumentMS as a new version. The document stays checked out while it is open, so two people cannot produce conflicting edits. Removing the download-edit-reupload cycle matters disproportionately: that cycle is where local copies are created, and local copies are where the current version stops being current.
The Outlook add-in files a message and its attachments into a folder from the reading pane. Email is where most documents arrive and where most of them stay, so intake that requires leaving the mailbox is intake that does not happen.
