If you don't still have that on call ops engineer, you're tricking yourself into thinking you have cover you simply don't. The low level hardware and networking

If you don't still have that on call ops engineer, you're tricking yourself into thinking you have cover you simply don't. The low level hardware and networking issues that a cloud provider would abstract from you in a well set up system are a rounding error of the set of ops issues. I used to provide services like that, on call, and the number of ops related interventions for my cloud customers were consistently higher than for those on colo setups.