Asta Powerproject for Building Information Modelling

The definition of done is the shared, written standard that every piece of work must meet before it counts as complete, covering the quality, testing, documentation and release conditions that make an increment genuinely usable.

A retrospective is a regular, structured meeting in which a team examines how it worked over the last period, decides what to change, and commits to one or two concrete improvements for the next one.

Incident management is the service-management practice of restoring a disrupted IT service to normal operation as quickly as possible, through a defined process of logging, categorising, prioritising, resolving and closing each incident, separate from the later work of finding and fixing its root cause.

A statement of work is the document that commits one bounded piece of work to paper: what gets built, on which assumptions, to what deadline, for what money, and what sits outside it.

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.