Impact Mapping is a brilliant way to generate and organize a Product Backlog hierarchically. It is the brainchild of Gojko Adzic. In this Post I describe Impact Mapping and How to create and use Impact Maps.
Slicing stories means decomposing stories into smaller stories and ensuring that the smaller stories continue to deliver value - end user value. Like slicing bread, no matter how thickly or thinly I slice it, I should still be able to make a sandwich.