A Big Estimate is Not a Sum of Small Estimates

I’m working with a client that has multiple, non-collocated component teams working on one project. It’s not my ideal situation, but we’re making the best we can of the situation.

We built a story map of business-oriented, project-level “epics.” These have been prioritized within business themes, and have been tentatively scheduled for development releases. The early ones have been estimated with level of effort (LOE). Basically these LOEs are Small, Medium, and Large, but given numeric scores to allow tracking project progress toward development releases from a business point of view using a burnup chart. (Continued)