Ask HN: How do you manage areas where you aren't familiar with the tech/domain?

Look, I get it, in an ideal world you've been in the trenches and can do, or at least have experience in doing something similar to what you're asking the people that report to you to do. The reality is, however, that at some point this doesn't scale and despite my best efforts to continue learning new technology, there are just some things that I don't know yet.

I am at a jumping off point in my career where I will have to start managing larger organizations, including organizations where I am just not familiar with the tech/domain.

I'm being hired because the bulk of my experience is applicable to the role, but, I can already foresee there are blind spots that I have that will make this job challenging.

At the moment, my first order of business will be to leverage my network to hire people that I can have at least some confidence in are competent in these areas. (And of course I'll start by observing and doing whatever I can to learn the domain as quickly as possible)

Any tips on what to do here? From the strategic to the day-to-day managing of engineers, what are some things I can do so that I don't fall flat on my face?