Most providers bill monthly for support, then invoice every project and upgrade on top. We fold the ongoing infrastructure work into the agreement - upgrades, replacements, remote-support tooling, monitoring, and backup licensing - for one predictable rate. And agreements are simply month-to-month: we don't lose clients, so we've never needed to hold anyone hostage.
Most new clients arrive the same way: they've known something was wrong with their IT for a while - they just didn't know what to do about it. When they finally make the switch, we usually find years of quiet neglect: unpatched systems, backups nobody ever tested, risks nobody owned. We fast-forward you to our standards.