Typically, an administrator and a developer (optional) keep tabs on the managed IT infrastructure services, and as the system gets more complicated, the number of admins and/or developers can rise as well.
These functions can be performed either by in-house specialists or by an outsourced IT infrastructure support team. If you choose the latter, you don’t need to spend time searching and hiring, as you’ll almost certainly get highly qualified and certified professionals the next day. IT infrastructure support teams can also be combined when an in-house specialist performs system monitoring and, if necessary, turns to outsourced workers for help.