[wg0]

Could be database migrations?

[jen729w]

At one point my store "does not exist". That's some poorly planned migration.

[wg0]

Possibly. There's nothing more scary than database migrations.

What you assume about your staging might not hold true for your production.

[angelamossfla]

A company of this size would not plan for significant downtime like this for a simple database migration. And their would have been warnings.