Beginners’ Guide: What is QA & What are QA methodologies?

What is QA?

Some people equate QA testing with software testing, but software testing is just a part of QA. In terms of the scope of work, it can be understood as QA > software testing.

It is sometimes confused with the concept of QC (Quality Control). They have differences in technical and objective aspects, but their ultimate goal is the same—to ensure product quality, identify potential issues, and facilitate the final launch of the product. The main difference lies in the timing. QA work aims to prevent product issues and is a preventive measure. The factory follows established production procedures and executes tasks through the correct methods to achieve quality control objectives. QC mainly identifies potential problems in intermediate/final products, confirms whether the production meets customer requirements and product specifications, and monitors the quality, which belongs to post-remedial inspection work.

What are QA methodologies & models?

Quality assurance methodologies describe the actions taken by teams to plan, design, monitor, and optimize the QA process for an organization. QA, software testing, and development methods usually fall into the following categories:

• Agile Methodology

Agile testing methods operate on a method that includes "sprints," which can be defined as short iterative sequences.

In general, agile practices are carried out by a group of members or a small testing team who consider the testing requirements of each phase of the sprints, including planning, analysis, and testing. Most experts dedicated to agile methods use it to mitigate risks. For example, they utilize knowledge from previous iterations to support each new iteration under consideration.

Each sprint in the agile process involves scrum, where the team discusses progress and plans for future testing sprints. In summary, agile testing principles make it easier for testers to meet scalable objectives by leveraging knowledge from completed iterations in ongoing ones.

• Waterfall Methodology

Waterfall is another popular method designed to proceed step by step. The main stages of the waterfall model involve documenting project plans to define steps, as further steps cannot be planned before the tasks defined earlier are completed. The main drawback of using the waterfall method is the inability to make quick adjustments due to its strict rules.

• Verification and Validation

This is another incremental model of software testing where development and testing processes run in parallel. Once a specific development portion is implemented, the testing team immediately starts testing the developed product component.

• Incremental Methodology

The incremental testing process follows multiple iterations, each containing some value related to functionality and product features. In most cases, the incremental approach includes three stages:

1. Design and development
2. Testing
3. Implementation

It provides great flexibility for the testing team and ensures a smoother testing and editing process.

• Spiral Methodology

The spiral method is often considered part of the incremental approach, consisting of cycles that follow one another. These cycles include planning, risk analysis, engineering, and evaluation. The next cycle begins at the end of the previous one, allowing the testing team to quickly gain quality feedback. This model even allows the testing team to identify and correct errors immediately while determining the causes of issues.

• Extreme Programming (XP)

Extreme Programming requires close collaboration between two testers, with one responsible for writing the code and the other responsible for reviewing it. The best part is that XP considers completion of each stage when testing the code. This method even helps testers develop high-quality code by closely examining it.

Wrapping up

Choosing the right QA methodology is crucial for achieving optimal product quality and optimization. Each methodology mentioned above has its own strengths and weaknesses, and the choice depends on the specific requirements and context of your project.

By understanding different QA methodologies and models, you can make informed decisions and implement effective QA strategies to optimize your product's quality. More, if you want to further optimize your product and software quality, you can choose a more professional team, such as the WeTest QA team, which provides comprehensive and professional localization quality assurance to ensure an efficient and quality final product submission.