ITTA offers the complete IASSC Lean Six Sigma path in Geneva and Lausanne: Yellow Belt (awareness and DMAIC basics), Green Belt (improvement project manager), Black Belt (transformation expert and Six Sigma leadership), as well as complementary Lean Management, Lean IT and Lean IT Kaizen modules. IASSC (International Association for Six Sigma Certification) is the neutral certification body recognised worldwide, independent of publishers. Sessions are delivered on-site and in interactive virtual classroom by certified Black Belts and Lean Six Sigma trainers active on continuous improvement projects in French-speaking Switzerland.
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This Lean IT approach is derived from the principles of Lean Six Sigma, a proven methodology in both industry and services.
This training prepares you for the Lean IT Kaizen exam by explaining how to organize a Kaizen event and improve quality.
Certifying
Lean management prioritizes continuous improvement by making small changes to processes to enhance efficiency and quality over the long term.
Yellow Belt Lean Six Sigma Training: Master the DMAIC basics and contribute effectively to improvement projects.
Certifying
Optimize your processes with Lean Six Sigma Green Belt : reduce waste, control variations, and improve performance.
Certifying
Lean Six Sigma Black Belt Training. Master the DMAIC methodology and succeed in the globally recognized IASSC certification.
Certifying
Lean Six Sigma combines two complementary continuous improvement approaches: Lean (waste elimination, pull flows, kaizen), originating from the Toyota Production System, and Six Sigma (variability reduction, DMAIC approach, statistics), originating from Motorola and General Electric. Together, they form today’s worldwide standard for process improvement projects, deployed in industry as well as in services. In French-speaking Switzerland, Geneva private banks, international organisations around Lake Geneva, pharmaceutical and watchmaking industries, university hospitals, cantonal administrations and large service companies structure their quality and operational excellence approaches around Lean Six Sigma.
ITTA offers the complete IASSC Lean Six Sigma path (Yellow Belt, Green Belt, Black Belt) as well as complementary Lean Management, Lean IT and Lean IT Kaizen modules. IASSC (International Association for Six Sigma Certification) is the neutral body independent of publishers, whose certification relies on a written exam based on Body of Knowledge standards, making it a rigorous certification recognised worldwide by employers.
Following a recognised Lean Six Sigma training opens access to highly valued roles: quality manager, continuous improvement project manager, process engineer, Six Sigma Black Belt, operational excellence manager, Lean coach, transformation consultant. Yellow Belt (awareness), Green Belt (project manager) and Black Belt (expert) certifications have become references recognised by recruiters and consulting firms in French-speaking Switzerland, particularly in pharmaceutical and banking industries.
Whether you are an employee involved in a quality approach, an improvement project manager, a process owner, an operational manager, a consultant or an aspiring Black Belt, our Lean Six Sigma training in Geneva and Lausanne provides the skills and vocabulary expected to lead DMAIC projects and prepare the official IASSC certifications.
The path starts with Yellow Belt Lean Six Sigma, covering fundamental Lean and Six Sigma concepts, the DMAIC methodology (Define, Measure, Analyze, Improve, Control), basic tools (SIPOC, voice of the customer, value stream mapping, 5S, Pareto diagram, Ishikawa diagram), and the role of Yellow Belts in a project team. This training is the natural entry for any collaborator participating in an improvement project led by a Green Belt or Black Belt.
The Green Belt Lean Six Sigma path deepens the DMAIC methodology, statistical tools (hypothesis tests, ANOVA, regression, simple experimental designs), improvement project management and capability measurement. The Green Belt leads medium-complexity improvement projects alongside their main activity. It is the most demanded target in French-speaking Switzerland for operational managers and quality project managers.
The Black Belt Lean Six Sigma path covers advanced statistical tools (multiple regression, factorial experimental designs, Monte Carlo, statistical process control SPC), Green Belt team management, coaching, change management and transformation leadership. The Black Belt leads strategic projects, mentors Green Belts and carries the continuous improvement culture.
The Lean Management, Lean IT and Lean IT Kaizen modules complement the Six Sigma path by deepening the Lean dimension applied to management and IT services. Lean Management covers Lean concepts in a service environment, value stream mapping and kaizen. Lean IT applies Lean to software production and IT services (incident management, change management).
Lean Six Sigma fits into a broader management and quality ecosystem. The process and Lean Management sub-domain regroups all our Lean and Six Sigma training. For project managers in charge of major transformations, the project management sub-domain (PMI, Prince2) brings a complementary framework. CISO and IT quality profiles will find a complement in audit and cybersecurity (ISO 27001) and IT service management (ITIL). For the human dimension of transformation, change management (APMG Change Management) is a valuable complement to the Black Belt path.
Lean Six Sigma remains a solid standard in 2026, particularly in regulated industries (pharma, medical, finance) where Six Sigma’s statistical rigour makes the difference. IASSC certifications remain the most widely recognised on the international market, competing with ASQ. Digitalisation of DMAIC projects accelerates with the use of data tools (Minitab, Power BI, R, Python) for Measure and Analyze phases. The application of Lean Six Sigma to services and digital (Lean IT, Agile Lean) gains visibility. The integration of generative AI in the Analyze phase (anomaly detection, cause exploration) starts to emerge. Our pedagogical content regularly integrates these evolutions to remain aligned with current practices.
All our IASSC Lean Six Sigma courses are available on-site in our Geneva and Lausanne centres, as well as in interactive virtual classroom with a certified Black Belt trainer live. Our sessions are organised in 5-week cycles. Each session includes practical cases inspired by real DMAIC projects (industry, services, banking, healthcare), statistical exercises, and support to prepare the IASSC exam. Customised corporate training is also possible at your premises, in Geneva, Lausanne, Vaud and across French-speaking Switzerland, with a programme adapted to your internal quality approach and priority improvement cases.
ITTA offers the complete IASSC Lean Six Sigma path in Geneva and Lausanne. Our Lean Six Sigma trainers are certified Black Belts active on continuous improvement projects for Swiss and international clients, covering industry, financial services, healthcare and public administration. The IASSC Lean Six Sigma catalogue regroups our courses covering Yellow Belt, Green Belt, Black Belt and Lean Management and Lean IT modules. Our pedagogical team supports you in choosing the right path, preparing the official IASSC exams and identifying funding solutions adapted to your professional situation.
Our pedagogical approach favours learning by doing, with cases inspired by the daily work of Swiss companies (production defect reduction, banking back-office process optimisation, hospital patient pathway improvement, insurance claim processing acceleration) and individualised follow-up throughout the path. Each session combines training time, applied statistical exercises, DMAIC simulations and exchanges with the trainer, allowing each participant to progress at their own pace and to leave with skills directly usable in their professional context.
Here is a selection of reference training courses in this catalogue, accessible directly:
Which Lean Six Sigma certification to choose to start?
Yellow Belt is the natural entry for any collaborator wishing to understand Lean Six Sigma and participate in an improvement project. To lead DMAIC projects autonomously, Green Belt is the next target. For expert profiles who mentor a Green Belt team or carry a strategic transformation, Black Belt is the target. Our pedagogical team guides you according to your profile and objectives.
IASSC or ASQ: what is the difference?
IASSC (International Association for Six Sigma Certification) and ASQ (American Society for Quality) are the two main Lean Six Sigma certification bodies. IASSC relies on a written exam based on a standard Body of Knowledge, accessible internationally. ASQ often includes a validated project in addition to the exam. Both certifications are recognised worldwide. Our catalogue is aligned with IASSC standards.
Do I need a statistical background to take Green Belt?
Comfort with basic statistical concepts (mean, standard deviation, normal distribution) eases Green Belt learning, which addresses hypothesis tests, ANOVA and regression. Our training covers the necessary statistical bases and uses software tools (Minitab, Excel) to make concepts accessible. Our pedagogical team adapts the pace to beginner profiles.
Are your Lean Six Sigma courses available for companies?
Yes, the entire IASSC Lean Six Sigma path is available in-house, in Geneva, Lausanne and in virtual classroom, with a programme adapted to your internal quality approach, concrete improvement cases and strategic objectives. Our team builds the specifications with you and organises sessions according to your calendar.
Monday to Friday
8:30 AM to 6:00 PM
Tel. 058 307 73 00
ITTA
Route des jeunes 35
1227 Carouge, Suisse
Monday to Friday, from 8:30 am to 06:00 pm.
