Sometimes, I'm okay throwing caution to the wind when updating my own systems and tools, but when I am managing platforms and products that others rely on - I plan every change in detail. I want the same from my vendors. I don't expect every rollout to be perfect. I do expect that when an issue occurs, it will be handled transparently with predetermined procedures in place to resolve or rollback. The lack of this is the fastest way to lose my trust as a customer.