Core Definitions

Before we start rearranging sticky notes like it’s modern art, let’s define a few recurring terms:

• Backlog: An ordered list of work items, ideally by value, not whim.
• Sprint: A fixed timebox (1–4 weeks) in which Scrum teams deliver a slice of value.
• WIP (Work in Progress): The number of items being worked at the same time. Too much WIP = stalled flow.
• Lead time: Time from request to delivery. Customer’s stopwatch.
• Cycle time: Time from “started” to “done.” Team’s stopwatch.
• Throughput: Number of items completed per time period.
• Flow efficiency: Active time / total time. The “how much waiting is ruining our vibe” metric.