Hooooold on a second… weren’t there supposed to be five steps to planning? How did “building” make it into the planning steps when it should come after? Ha! Bet you know that building could be part of planning, too. Of course, this is building in a different way than you might expect.
Bugs can creep into software even when you think everything is working perfectly. Just as you can keep your car in good shape by maintaining it and servicing it regularly, you should have a regular testing and maintenance plan to ensure that your cart is functional.