#17 Office 365 recently installed at my place of work, which is in dozens of countries. Makes it easy now for spies to get any info they want while sitting in their cubicle in say China or Russia. Microsoft had an outage a few weeks ago for Office 365 and many companies just had to wait for Microsoft to fix the problem. Would have been no problem if the company had a local mail server and not be dependent on a 3rd party.
That sucks. Reminds me of 4 decades ago when we had time-sharing terminals at work. I was in the Systems group and we were constantly screamed at when there was an outage and people were idle waiting to use the terminals. This was localized to our company with hundreds of users. I'm trying to imagine thousands if not millions of users complaining to Microsoft to fix connectivity!
P.S. there were a few times when I could have fixed the problem in 15 minutes, but my boss forced me not to, so the outage extended to a day or two. Politics, he was angling for a larger budget for hardware and software to "prevent" glitches. He always got his way. Made us workers under him look bad for not quickly fixing problems - sometimes it is politics and not incompetence.