Lean Six Sigma stands as a powerful methodology that leads organisations towards enhanced efficiency, quality and customer satisfaction. At the core of Lean Six Sigma, DMAIC (Define, Measure, Analyse, Improve, and Control) acts as the fundamental improvement method. Lean Six Sigma Training helps professionals to use Lean six sigma methodology in their organisation and bring organisational success. 

In this blog, we will discuss what DMAIC is and the benefits of DMAIC to organisational success. The types of Lean Six Sigma Belt Certifications, such as Lean Six Sigma Yellow Belt Certification are useful in various operations and processes and working based on DMAIC principles.   

Table of Contents 

  • Phases of DMAIC  
  • Introduction to DMAIC 
  • Types of Lean Six Sigma Belt Certification  
  • Conclusion 

Introduction to DMAIC 

DMAIC stands for Define, Measure, Analyse, Improve, and Control. It is a process cycle used in Six Sigma and other process improvement methodologies. DMAIC provides a structured approach that helps to identify and resolve problems, optimise processes, and achieve measurable improvements in the quality and efficiency of the processes. 

Phases of DMAIC 

The five phases of DMAIC include:  

  1. Define 
  2. Measure 
  3. Analyse 
  4. Improve 
  5. Control 


It deals with defining the problem statement and giving a clear and understandable explanation for a problem. This phase is all about designing the process and understanding how the issue affects all the stakeholders. Preparing the problem statement is the way to start a DMAIC cycle. 


Measure phase deals with breaking down of issue into a brief and easily recognisable information. Without having strongest matches for differentiation, it is tough to track improvements.    


The analysis phase deals with arranging and analysing the process and separating the errors that need to be corrected. This phase helps to know the delay between the current and expected levels of performance and the root causes of the problem.  


As the name suggests, it deals with improvement by creating a strategy on how to connect and address the issues. Also, this phase deals with designing a process map and determine statistical validity of improvements in data. In DMAIC process, improvement phase is one of the toughest phases.  


The last phase in DMAIC process is Control phase. This phase controls the changes made in the improvement process and checks if the variation is within an acceptable limit. 

Types of Lean Six Sigma Belt Certification 

Lean Six Sigma offers a hierarchical Certification system, with different Belt levels signifying varying levels of expertise and responsibilities within the methodology. Here are common types of Lean Six Sigma Belt Certification: 

  • White Belt Certification 
  • Yellow Belt Certification 
  • Green Belt Certification 
  • Black Belt Certification 
  • Master Black Belt Certification 

White Belt Certification  

This is the entry-level knowledge in the Lean Six Sigma Belt Certification process and works with problem-solving teams. The aim of a White Belt Certification is to know the basic level concepts of Lean Six Sigma. Project Managers, Engineers, Consultants and Operations Managers can take benefit from White Belt Certification.  

Yellow Belt Certification  

Lean Six Sigma provides foundational knowledge of Lean Six Sigma principles and basic problem-solving skills during operational processes. Yellow Belt holders typically support improvement projects as team members and contribute to smaller-scale members or within their departments.  

Green Belt Certification  

The intermediate certification indicates proficiency in Lean Six Sigma methodologies and tools for someone with at least three years of experience and who wants to illustrate their knowledge of Lean Six Sigma tools and processes.  

Black Belt Certification  

This Black Belt Certification is for professionals who have the knowledge to obtain leadership roles along with a personal sense of achievement.  

Master Black Belt Certification  

Master Black Belt acts as a mentor for the balance of Six Sigma. When it comes to the benefits of the Black Belt, Certification increases job security and Opportunities. 


DMAIC serves as the backbone of Lean Six Sigma, providing a structured framework for process improvement in organisations that use Lean Six Sigma methodology. Organisational excellence is the result of following DMAIC into operations. By adopting Lean Six Sigma methodologies and obtaining Certifications, individuals can contribute to the success of process improvement initiatives and drive positive change within their organisation. 

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