A PDCA Cycle Strategy Is Meaningless Unless You Put It Into Practice
Marketing Framework Introduction 8
PDCA Cycle
No matter how carefully a strategy is crafted, it is ultimately nothing more than a "prediction." The market is always moving, customers are fickle, and competitors play by no rules. Capitalism is nothing more than continuing to spin a game with no correct answer through "trial and error."
That is where the PDCA cycle—a "rotational way of thinking"—becomes necessary.
P (Plan) = Planning
D (Do) = Execution
C (Check) = Evaluation
A (Act) = Improvement
This term has become so famous that it is printed on the obi strips of business books and repeated like a mantra in training materials. However, that does not mean it is "understood". In fact, in practical settings, there are far too many cases where people "only do P and never move to D" or "force through A while C remains ambiguous."
The prototype of PDCA was proposed in the 1930s by Walter Shewhart, known as the father of quality control, and later spread when Dr. Deming introduced it to Japanese companies. Especially within Toyota's "Kaizen culture," PDCA has taken root as living knowledge. But this "circuit for improvement" is not limited to quality control. It functions most deeply in marketing.
For example, let's say a beverage manufacturer makes a plan to "sell a new energy drink to Gen Z."
Plan: Target is 18-25 year olds, flavor is berry-based, concept is "after school when your brain is sharp"
Do: Reach them via YouTube ads and roll out exclusively in convenience stores
Check: Sales grew in the first week, but the repeat rate is less than 10%. It didn't become a topic on social media either
Act: Redesign the ad story. Shift from functional appeal to emotional appeal of "romance x study"
In this way, PDCA is not just "improvement," but a continuous dialogue of hypothesis testing with customers. The market won't give us the "answer." That is why we have no choice but to experiment ourselves and keep learning from our mistakes.
What many companies overlook here is the importance of "C = Evaluation". Checking is not just looking at numbers. Sales went up or down—there is no learning in that alone. Why did they go up? Which measure was effective? Why didn't customers return? Unless a "dialogue between hypothesis and data" is born here, PDCA will just become a routine task.
It is also said that PDCA should be a "spiral," not a "circle." In other words, it means you shouldn't just go around in circles, but should move up a level each time you spin it. Based on the reflections from the previous time, execute faster, smaller, and sharper. This is what some companies call "high-speed rotation PDCA".
As a tip, I recommend operating PDCA by "task unit" rather than "project unit". For example, even a single post on social media can be a subject for PDCA.
Plan: Will this wording resonate with Gen Z?
Do: Try posting it
Check: Impressions, engagement, and comment content
Act: Change hashtags, adjust writing style, and optimize images
In this way, running each individual attempt on a small scale and learning quickly is the way to turn PDCA into a "living strategy."
However, there is a pitfall to PDCA. It is "seeking a perfect Plan and failing to take the step to Do." In the field of marketing, imperfect execution is worth many times more than a perfect plan. This is because you only obtain "real data" once you execute.
PDCA is "trial and error with capital."
The future cannot be predicted, but through repetition, you can get closer to "highly accurate hypotheses." And that process itself becomes the source of competitive advantage. There is no such thing as a "finished product" in the market. There are only "prototypes under improvement."
Next time, we will cover "ECRS." When it comes to improvement, this framework, which pursues "efficiency" more directly, will appear. In an era of limited resources, the "courage to not do" may be the greatest competitive strength.