Work-In-Play Limits in Agile Software Development | All About Agile
So let’s say you set a WIP limit that no more than 3 features can be in play at any one time. You have 3 slots on the board for development, and 3 slots for testing. What happens when the testing slots are all full and the developers have capacity to do more?
If they think the tester will be done before they complete the 4th feature, they can safely start it. But what if they think they can complete the 4th feature before the tester is done? What should they do? Should they sit idle?
