Fewer buggy applications will be available on the market as a result of the more oriented approach and testing.

Defect Prevention & defect management tools are much more reliable and successful in minimizing the number of errors, as well as being very cost-effective in repairing defects discovered early in the software development process. Defect Discovery, Defect Removal, and Process Improvement are all part of the Defect Management Process, which is used by most organizations.

Defect Avoidance: Defect Prevention is the safest approach for removing defects early in the testing phase rather than discovering them later and then correcting them. This method is also cost-effective because the cost of fixing defects discovered early in the testing process is very low.

While it is impossible to eliminate all flaws, you will reduce the effect of the flaw and the cost of correcting it.

The below are the main stages of defect prevention through manual operations or defect management tools:

  • Identify Critical Risks: Classify the system’s critical risks, which would have a greater effect whether they emerge during training or at a later date.
  • Compute the Financial Effect of Each Critical Risk: For each critical risk, measure the financial impact if the risk were to occur.
  • Minimize expected impact: After you’ve identified all-important threats, focus on the ones that are more likely to affect the system if they occur, and attempt to minimize or remove them. It decreases the chance of occurrence and the financial effects of threats that cannot be prevented.

Deliverable Baseline: When a deliverable (system, product, or document) meets the predetermined milestone, it is referred to as a baseline. The product or deliverable moves from one point to the next in this phase, and as the deliverable moves from one stage to the next, the system’s current faults are carried along to the next milestone or stage.

Consider the following scenario: coding, device checking, and eventually device testing. If a developer is responsible for scripting and unit testing, the testing team is responsible for device development. One milestone is coding and unit testing, while another is system testing.

Defect Discovery: It is almost difficult to eliminate all faults from a process and create a defect-free system. However, you should detect flaws early on, until they become more costly to the project. We may assume that a flaw is found until it is officially brought to the notice of the development team, and the defect development team accepts it as a defect after further investigation.

The following are the steps used in Defect Discovery:

  • Find a Defect: Recognize weaknesses in the system before they become a big issue.
  • Report Flaw: As soon as the testing team detects a defect, it is their duty to alert the production team that there is a concern that needs to be reviewed and resolved.
  • Acknowledge Defect: After the testing team has assigned the defect to the production team, it is the duty of the development team to recognize the defect and continue working with it as it is a true defect.
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Defect Resolution: The testing team found the defect and disclosed it to the production team during the above phase. The production team must now go on with the defect settlement.

Process Enhancement: Although defects are prioritized and corrected throughout the defect resolution phase, this may not imply that lower priority defects are unimportant or have no effect on the method. From the standpoint of process improvement, all defects detected are called essential defects.

And small flaws provide an incentive to learn how to develop the procedure and avoid the existence of any flaws that might lead to system failure in the future. The discovery of a fault with a minor effect on the system may not be important, but the existence of such a defect in the system is.

All interested in the project should look back to see where the fault came from in order to strengthen the operation. Based on this, you can make improvements to the validation process, the base-lining paper, and the inspection process to find defects early in the process, saving money.


The Defect Management Process and defect management tools should be practiced during the whole software development process, not just during testing and development.

If a defect is found during the testing process, the question becomes: if the defect is discovered during this phase, what about the other defects that are now present in the system and could cause system failure if they exist and are not yet discovered?

As a result, all procedures, such as the evaluation process, static monitoring, assessment, and so on, must be strengthened, and everyone involved in the project must take the process seriously and participate when possible. The fault management method should be understood and supported by senior management in the company.

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