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How do you use Six Sigma to ensure IT quality and reliability?

Meaning of Six Sigma

Six Sigma is a business methodology for quality improvement that measures the number of defects in a current process and seeks to systematically eliminate them. The Six Sigma management system was developed in 1984 by a Motorola engineer named Bill Smith to reduce variations in Motorola’s electronic manufacturing processes that have been causing product defects. After that the management system continues to be reinforced by tactics, equipment, and cultural standards.

What is the process of Six Sigma?

In statistical analysis, the Greek symbol sigma denotes a standard deviation from the mean. Walter Shewhart proposed in the 1920s that Three Sigma indicated too many flaws and necessitated process change. Bill Smith later presented a more granular method, establishing Six Sigma as the starting point for process improvement. Six Sigma permits 3.4 flaws per million opportunities, but Three Sigma permits 66,807 defects per million opportunities. Companies that employ Six Sigma generate a baseline sigma to indicate their progress towards reaching Six Sigma and evaluate potential development.

What exactly is the significance of Six Sigma?

In 1995, General Electric CEO Jack Welch endorsed Six Sigma, a corporate technique that may cut process costs by up to 50%, enhance cycle times, prevent waste, identify customer requirements, boost satisfaction, and offer dependable goods and services. Despite its costly setup expenses and sluggish outcomes, it is frequently used by enterprises all over the world.

What are the fundamental concepts of Six Sigma?

The following are the major Sigma principles:

  • Customer centricity
  • Use data
  • Continuously improve
  • People should be involved
  • Give plenty of time

How Six Sigma is Implemented in IT

Make the case for statistical tools and their advantages to win over stakeholders if you want to adopt Six Sigma in your company. Establish reasonable benchmarks for flawless operations, but apply best practices to achieve greater success. Following the eight steps will guarantee a smooth rollout and effective deployment after management has recognized the potential of Six Sigma.

Step 1: Draw attention to quality losses to inspire stakeholders.

Step 2: Put project management into practice and secure the required funding.

Step 3: Inform team members about the Six Sigma approach to management.

Step 4: Establish priorities and a quality control chart.

Step 5: Give each member of the team a specific ownership role.

Step 6: Ensure that the measurements are being made using the right metrics and indications.

Step 7: To comprehend the flaw, carry out a root cause analysis.

Step 8: Oversee the program to guarantee correct implementation and ongoing enhancement.

How is Six Sigma applied to IT?

DMAIC and DMADV are applied for Six Sigma Although each phrase has a specific application, they are all named after the main phases in their respective processes.

  • A process that currently exists can be corrected by applying DMAIC (define, measure, analyse, improve, and control).
  • A new process is created using the DMADV (define, measure, analyze, design, validate) technique.


Six Sigma DMAIC can be read in entirely listed below:

  • Define: List all client deliverables together with the project’s objectives.
  • Measure: Recognize existing performance.
  • Analyze: Find the underlying reasons behind any flaws.
  • Enhance: Determine how to get rid of flaws and fix the procedure.
  • Manage the performance of the process going forward.


This is a detailed explanation of Six Sigma DMADV. This methodology’s first three phases are the same as those of DMAIC. Some businesses use the term DFSS (Design for Six Sigma) instead of DMADV since the two are so close.

  • Define: List all client deliverables and the project’s scope.
  • Measure: Recognize existing performance.
  • Analyze: Find the underlying reasons behind any flaws.
  • Design: Establish a procedure that satisfies the requirements and demands of the client.
  • Verify: Make sure that the procedure is tailored to the needs of the consumer and operates as intended.

There are particular scenarios when the Six Sigma DMAIC and DMADV techniques should be applied. While DMADV is employed when creating a new process or product, DMAIC is utilised when an existing one performs badly or does not satisfy consumer demands.


Adopting best practices, working with IT personnel, streamlining procedures, prioritizing projects according to impact, urgency, and viability, and coordinating them with the overarching corporate vision, purpose, and goals are all necessary for the effective implementation of Six Sigma in IT. This will guarantee smooth operations, lower complexity and unpredictability, and enhance communication.