PMBOK

Separate Quality Assurance from Quality Control

Plan both preventive quality practices and checks on finished work, with clear acceptance evidence and a response when defects are discovered.

15 September 2026 2 min readBeginner

Define what quality means here

Quality planning starts with the requirements the deliverable must satisfy. Replace labels such as “high quality” with observable conditions: a calculation matches an agreed rule, a user can recover from an error, or a handover includes an operational owner. Discuss these conditions before execution. A team cannot reliably inspect its way toward a standard that stakeholders have never defined, and different audiences may care about different failure modes.

Improve how work is produced

Quality assurance focuses on confidence in the processes used to produce the result. Examples include reviewing a delivery process, checking whether a review practice is followed, or improving a recurring handoff. Ask where defects originate and which preventive change could reduce them. A checklist is useful only if it addresses a real failure pattern. Adding approvals after every problem can create delay without improving the underlying work.

Check the actual deliverable

Quality control examines outputs against the agreed requirements. For a data import, that might include record counts, field validation, and sampled comparisons with the source. Specify who checks, what evidence is retained, and what happens when a result fails. The Definition of Done guide shows how a delivery team can make recurring completion checks explicit without confusing them with every item-specific requirement.

Use defects to improve prevention

Imagine repeated defects caused by ambiguous date formats. Correcting each affected record is necessary, but the pattern also suggests a process improvement: agree the format earlier and validate it before import. Track both the immediate correction and the preventive action. Keep the example proportional to the project; not every isolated typo requires a formal investigation. Prioritize recurring or consequential failures where learning can change future outcomes.

Report evidence rather than confidence alone

A useful quality update states what was checked, what failed, what remains unchecked, and who accepted any unresolved limitation. Avoid a green status based only on the absence of reported defects. Connect unresolved findings to the risks and issues distinction so an actual failure is managed as an issue. Quality is easier to discuss when stakeholders can see the evidence behind the completion claim.

Published by AgilePro.info under our Editorial Policy. Guidance is based on established delivery practice and is general information, not professional advice for a specific project.

Related Articles