For decades, on-premises solutions served as the default option for business phone systems. An on-premises (or “legacy”) system is one where your company purchases the system hardware — including servers, switches, etc. — and hosts it at your office location. You are then responsible for its upkeep, as well as any maintenance or updates. But where are your employees located? If you have a hybrid or remote model, it may be time to reevaluate your overall investment.