Re: Still sceptical..
"Can you really say with 100% certainty that Microsoft (or Google/Amazon!) will always be able to keep that data safe?"
Can your firm keep that data safe? If you work for Verizon, Deloitte, HipChat, Wonga, the NHS, Virgin America, Equifax... well that's just some of 2017's bigger targets. Chances are that if you work for a smaller firm you might not even know you've been breached, so why not let a larger firm take the hit for it? Let Microsoft/Google/Amazon worry about the cost of hiring security researchers and accrediting the infrastructure, whilst you worry about your *actual business*.