Worldwide

Above my pay grade, but an ordering/payments system that can take down McDonald's worldwide (doesn't seem to be everywhere, but a lot of places!) if there's a glitch seems to be rather poor design.

McDonald’s restaurants around the world have been hit by an IT outage that has left staff unable to serve food.

Customers in the UK, Australia, New Zealand, Japan and Canada have all complained about not being able to order in store.

There's always McDowell's.