The term gets used loosely, so here is the version without the sales language
Managed IT means a single provider takes responsibility for your technology working, for a fixed monthly fee per user, rather than charging you by the hour once it has stopped working. The fee covers the people your staff phone, the software that watches your systems overnight, the patching, the backups, the security stack and the planning conversation about what needs replacing.
The part worth paying attention to is the incentive. On an hourly arrangement, a provider earns more when your systems fail. On this one, every hour they spend fixing something is an hour they are not paid extra for, so preventing the failure is in their interest as much as yours. That is the entire argument for the model, and it is why the monitoring matters more than the help desk
What it is not is a replacement for judgement. Someone still has to decide whether the ageing server gets replaced this year or next, and what that costs. On the fully managed plan that conversation happens monthly, with a named advisor, rather than in a panic after the hardware fails.


