What is the DMAIC Process | Improve Your Processes

DMAIC process

Introduction to the DMAIC Lifecycle For Process Improvement

The DMAIC Lifecycle is the method used in Six Sigma to improve an existing repetitive process. It is one of the two Six Sigma lifecycles and allows businesses to bring about efficiency and improve processes in their day-to-day operations. DMAIC stands for: Define, Measure, Analyze, Improve, and Control, the five project lifecycle phases. This article explores the details of each step to help you recognize the benefits and functions of the Six Sigma DMAIC methodology.

The DMAIC Lifecycle

Let’s start with the most common questions:

What is Six Sigma DMAIC lifecycle?

The Six Sigma DMAIC lifecycle, which stands for Define, Measure, Analyze, Improve, and Control, is a data-driven quality technique used to improve business processes. The letters represent the five steps in the lifecycle and the resources necessary to carry them out.

How is the Six Sigma DMAIC Lifecycle defined?

The five steps to problem-solving begins with mapping the issue at hand, moves on to the collection and analysis of relevant data in conjunction with Root Cause problem-solving techniques, and results in a prioritized list of recommendations to improve and achieve optimal process performance.

Here is an explanation of each phase of the five-step lifecycle:

1. Define

This is where you will define the problem or opportunity and put together a Six Sigma project team to address it. You will also compare the current circumstance to your desired outcome. You may use tools, such as a process map, to do this. As part of this process, you should note any potential roadblocks and assess if you have the necessary resources to succeed. It’s also important to define what success looks like here to ensure the project team is on the same page.

2. Measure

This is where you will measure and collect data on the current state of a process. First, you will collect data to quantify critical process elements. You’ll measure defects or other process issues. In the next stage, this data will help you discover improvement possibilities that drive the changes you will make to the process.

3. Analyze

Here, you will use statistics and other tools to find out why your performance is where it is so you know what needs improving and how best to do it. Using statistical methods, you will examine patterns in your data to identify potential performance variable defects to eliminate them from the process. Then, strategies can be chosen with the help of decision models like Pugh charts and cause-and-effect diagrams.

4. Improve

Now that you know what needs improving, you can devise solutions for making those improvements happen! The Improve Phase is when you actually make changes in your processes so that they’re better suited for achieving your goal, which includes updating the process map. To reliably apply these improvements, detailed specifications are necessary. Furthermore, these adjustments should be recorded so they can be repeated in the future if required.

5. Control

Control plans are created after improvement plans have been implemented; they monitor whether or not those improvements are working, so you can make any necessary adjustments along the way until everything runs smoothly.

DMAIC vs DMADV Lifecycle

If you are familiar with other Six Sigma methodologies, you’ve probably heard of DMADV, also called Design For Six Sigma (DFSS). Both DMAIC and DMADV follow a systematic approach to problem-solving, variation reduction, and improvement. Data collection and analysis, collaborative problem-solving teams, a central focus on the client, and a common set of tools and technologies are all shared by the two methods.

One glaring difference between DMADV (Define, Measure, Analyze, Design, Verify) and the DMAIC process is DMAIC’s lack of a Design Phase, along with the trade of the Control Phase for the Verify Phase. This is a crucial distinction because both approaches are designed to increase the efficiency of a process, reduce waste, and make it more effective, which is why there is an Improve Phase instead of a Define Phase. However, DMADV is intended to be used when designing new processes as opposed to mending current ones.

The bottom line is that the DMAIC lifecycle aims to improve an already existing process, while DMADV is applied during the design phase of a new product, service, or process. While DMAIC works to fix problems after they’ve already occurred, DMADV aims to prevent them from the start. Controls for continued improvement are put in place at the end of a DMAIC cycle, while the goal of a DMADV cycle is to ensure that the new design is sound before it is put into action.


Six Sigma is one of the best problem-solving and improvement methodologies, and its effectiveness has been proven time and time again. The DMAIC lifecycle is an integral part of any Six Sigma project and has the potential to identify hidden inefficiencies. As a result, the Six Sigma DMAIC lifecycle can empower any company to improve its efforts, be more efficient in its methods, eliminate waste, and help with future planning.

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