Plan–Do–Check–Act (PDCA)

The PDCA cycle (Plan–Do–Check–Act) is an iterative method for continuous process improvement and problem solving. Teams plan actions, execute them, inspect results, and adjust processes accordingly. The cycle promotes systematic learning loops, measurable improvements, and can be applied across quality management, operations, and service delivery contexts.

Use this profile to understand the building block briefly, place it in the model, and switch to the 360° assessment when needed.

Content type

Method

Executable approach: can be applied and produces an outcome.

Classification level

Structure

What organizes, connects, or makes decisions possible.

Available perspectives

Open this building block directly in an already curated view.

360°

In brief

PDCA Cycle – in brief

The PDCA cycle structures continuous improvement into Plan, Do, Check, and Act.

Where does it come from?

Walter A. Shewhart developed the iterative improvement cycle, and W. Edwards Deming spread it through quality management and manufacturing practice. PDCA names learning through planned trials and feedback.

The mental model

Plan defines the problem, hypothesis, goal, and measurement. Do tests the change in a controlled way. Check compares observations with expectations. Act standardizes an effective change or adjusts the hypothesis and begins another cycle.

Key building blocks

Plan

The team sets problem, goal, assumption, intervention, and measurement before the trial.

Check

Observed results are compared with the goal and baseline.

Act

The team adopts, corrects, or rejects the change and captures learning.

When is it useful?

PDCA makes improvement traceable and experimental. It requires meaningful measures, short learning loops, and actual follow-through; documentation alone does not improve a system.

PDCA cycle – Wikipedia