Concepts
Edge Case
An edge case is the unusual situation your app was not obviously built for: the customer with two last names, the order with zero items, the booking at midnight on New Year's Eve. The normal path works fine; the edge is where things break. AI builders handle the normal path well and skip the edges unless you name them.
This entry has not yet received a source-reviewed lesson update.
Member lesson
The definition and sources are public. The complete practical lesson is for members.