Why the platform exists.
We kept building the same foundations for organisations that schedule people: calendars, providers, locations, records, reminders, leave. Every time, the multi-tenant parts were bolted on afterwards, and every time they were the parts that hurt.
So we built the core once, with tenancy in the model from the beginning, and made every module share it. Healthcare came first because it is the least forgiving domain, but nothing underneath is specific to it, which is why the same platform runs for salons, gyms and studios that have never seen a patient.