Project Management with Earned Value Management (EVM) 9 PDUs

A sprint is a fixed-length iteration of one month or less in which a team plans a goal, builds a usable increment toward it, shows the result, and reviews how it worked, before the next sprint begins immediately.

A product backlog is the single ordered list of everything that might be done to improve a product, owned by one person who decides the order, refined continuously, and drawn from when each iteration is planned.

Kanban is a method for managing knowledge work by making it visible on a board, limiting how much is in progress at each stage, and improving the flow of items from start to finish rather than working in fixed iterations.

Scope creep is the quiet expansion of a priced piece of client work through additions that each look too minor to renegotiate, until what gets delivered is substantially larger than what was sold.

A retainer is a recurring fee that holds a supplier's time or availability open across a period, so what the client buys is first call on somebody's attention rather than any named artefact.

A day rate sells a bounded unit of a supplier's working time rather than a finished result, so the client rather than the supplier carries the risk that the job turns out bigger than it looked.