Andon is a way of finding and fixing problems based on the lean manufacturing way of using a signal to alert operators of a problem. The idea is simple: if a tester finds a problem, they tell the developer and the problem becomes the priority until it’s fixed. The problem is solved quickly and does not affect the product. Using Andon in Agile can help improve the work by making it easier to see, work together, and respond to changes with color-coded flags are raised.
An example of Andon in Agile is when a tester sees a bug in a software feature. The tester uses Andon flags to tell the developer expressing urgency/importance/due/overdue. The developer works on fixing the bugs. The tester checks that the bugs is fixed based on criteria. The team uses this way to make sure that mistakes are fixed fast and do not affect the product timelines.