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Updated on 16 October 2026. What’s new: the practitioner exam accepts several prerequisites, not only foundation, and prince2 certification is renewed every three years.

The whole PRINCE2 route costs less than most people expect, and the part they forget is the upkeep. On PeopleCert's own pages the Foundation and Practitioner exam bundles come to £817 including VAT together, and you spend 3 hours 30 minutes in the exam seat across both papers. Then a clock starts: PRINCE2 certification has to be renewed every three years, and the renewal rules decide what it really costs to stay certified.

This guide follows the route in the order you will live it: what each step costs in money and hours, which starting point lets you skip Foundation, where to buy the exam, what happens on the day, what a failed attempt costs, and then the part most guides skip, which is how to keep the certification current. Everything below was read on PeopleCert's own pages in October 2026, and PeopleCert sets these rules, so check your account before you pay for anything. PRINCE2 7, the current edition, is the version both exams now test. How the method itself works, what the practices are and how to study for each paper are covered in separate guides on this site, so this one stays on the certification journey.

Walk through almost any plant or office improvement programme and you will hear Kaizen and Six Sigma used as if they were two words for the same thing. They are not. Kaizen is a habit the whole workforce keeps, in which small changes are made continuously by the people doing the work. Six Sigma is a method a trained team applies, in which data has to prove that the cause of a defect was found before anybody claims a fix.

Both end with a better process, so the muddle is forgivable. What it costs is time. Teams charter a four-month statistical project to solve something an operator could have fixed on Tuesday, or run a week of workshops at a defect whose cause nobody has measured and watch it return by the next quarter. This article sets the two side by side on origin, practice, evidence, cadence and scope, shows where a kaizen event genuinely belongs inside a DMAIC project, and ends with the belt exams that test both.

Where did Kaizen and Six Sigma come from, and why does the origin still show?

The two approaches were born in different decades, in different industries, to solve problems their founders described in different language. That history is not trivia. It explains why one of them needs nobody's permission and the other arrives with a charter.

A Kanban system is effective when three things hold together: work starts only because downstream demand asks for it, every stage has a hard cap on how much can sit in it, and the team watches how long items take to get through. With those in place, inventory and queues shrink and delivery becomes predictable. Without the caps, Kanban turns into a colourful status display that changes nothing.

That is the short answer, and it holds for a car plant and for a software team alike. The longer answer explains why the caps matter so much, how to size them, which numbers prove the system is working, and where Kanban is the wrong tool. This page covers the method from its origin in Toyota's machine shop to the boards used by service desks today, and closes with where Kanban appears in the IASSC Lean Six Sigma bodies of knowledge, because it is one of the Lean controls those exams expect you to understand.

What is a Kanban system, and where did the cards come from?

The Japanese word kanban means signboard. In production, a kanban is a signal that authorises work: make this part, or move this container, in this quantity. The signal was originally a card that travelled with a box of parts, and Wikipedia's account of the kanban scheduling system credits Taiichi Ohno, an industrial engineer at Toyota, with developing it to improve manufacturing efficiency. It is also known in the automotive industry as the Toyota nameplate system.

On one packaging line, a quality team cut the defect rate sharply, yet orders now wait longer to ship than they did before the project began. Six Sigma saw the defects and fixed them; nobody was looking at the queue. That gap is the difference: Lean removes waste so work flows faster, while Six Sigma reduces variation so output is right. Lean Six Sigma runs both lenses at once.

People search for the difference between Lean and Six Sigma as if one must be the winner. In practice they answer two different questions about the same process. Lean asks where the time goes. Six Sigma asks why the result changes from one unit to the next. This article explains what each method contributes on its own, what changes when you combine them, how to tell which lens a problem needs, and which belt credential matches the work you actually do.

Why can the defect rate fall while the queue gets longer?

Go back to the packaging line. The improvement team ran a textbook project: they measured seal failures, found that heater temperature drifted during long runs, added a control chart and a tighter setting, and the rework rate collapsed. By every quality measure the project worked.

Definition and History

PRINCE2 (an acronym for Projects in Controlled Environments) is a de facto process-based method for effective project management. Used extensively by the UK Government, PRINCE2 is also widely recognized and used in the private sector, both in the UK and internationally. The PRINCE2 method is in the public domain and offers non-proprietorial best practice guidance on project management.

PRINCE was established in 1989 by CCTA (the Central Laptop and Telecommunications Company) since renamed the OGC (the Workplace of Authorities Commerce). In June 2010, the Workplace of Authorities Commerce Greatest Observe Administration functioned moved into the Cupboard Workplace. PRINCE2 was initially based mostly on PROMPT, a mission administration technique created by Simpact Programs Ltd in 1975, and adopted by CCTA in 1979 as the usual for use for all Authorities info system initiatives.

When PRINCE2 was launched in 1989, it successfully outmoded PROMPT inside Authorities initiatives. PRINCE stays within the public area, and copyright is retained by the Crown. PRINCE2 was revealed in 1996, having been contributed to by a consortium of some 150 European organizations.