I run a resturaunt. Resturaunt software (POS, scheduling, table reservations) has many saas solutions, but I've personally seen these problems:
- POS requires cellular for some legal reason, but celluar connection is poor inside a mall
- Power goes out, backup services bring cell networks & fiber back online but not in a uniform manner so service is slow and the Saas times out too quickly to be used
- 2 factor auth won't work because cell systems are degraded
And in all these cases, there wasn't a good reason for the software to be fully online. The usage was by 1 or 2 managers and they all shared the same computer located inside the business.