The Essence of Quality Assurance and the Value of Testing Roles

Having worked in testing for over eight years across three departments and multiple business lines, I have experienced testing transformations and returned to testing. Throughout this journey, my understanding of testing work and its role has evolved, and I would like to share these reflections to provide valuable ideas for business testing colleagues.

1. What is the essence of quality assurance?

Quality assurance involves many activities such as functional testing, performance testing, A/B testing before release, and regression testing, smoke checks, and anomaly monitoring after release. These activities revolve around defect discovery, aiming to uncover potential bugs. However, beyond these concrete tasks, what is the true essence of quality assurance?

I believe the essence of quality assurance is:

To exhaust all possible means and continuously engage in a process of falsification.

Within limited conditions and time, to minimize the probability of online issues or failures.

From a risk‑control perspective, to proactively discover and disclose all quality risks, thereby reducing the loss caused by quality problems to the minimum.

Summary: Quality assurance is not about finding every bug or eliminating every risk, but about ensuring that even if bugs are triggered, they do not cause severe impact. The goal is to discover as many bugs as possible → lower bug‑trigger probability → minimize the loss caused by bugs.

2. What is the essence of the testing process?

Front‑line business testers mainly support delivery: understanding PRD and technical solutions, creating test plans, executing tests, finding and verifying bugs, and performing post‑release regression. The essence of this process, in my view, is “ROI”.

The testing process aims to balance defect discovery with resource investment. Resource investment includes not only testing resources but also the contributions of all participants in business delivery. Therefore, we may need to sacrifice coverage of long‑tail defects to improve ROI while maintaining online risk control.

3. The value of the testing role

Before answering, we need to clarify several questions:

1) What determines the value of the testing role and what influences it?

It depends on the business’s quality requirements, which are shaped by user base, scale, financial risk, and the probability and impact of issues.

It is affected by the business development stage and the maturity of the technical architecture. Early, fast‑growing stages with chaotic architecture rely heavily on testing, while mature, stable stages reduce this dependence.

2) Can the testing work be transferred or eliminated? What decides this?

The answer is yes, it can be transferred or omitted, though it may not be the best choice.

Business quality demands: when the business matures, the need for extensive quality assurance may diminish.

Online risk controllability: a stable, mature system with reliable risk controls reduces the need for intensive testing.

Cost of quality activities: if the cost of maintaining testing is higher than the benefit, transferring or reducing testing may be justified.

3) How to demonstrate the value of the testing role?

Reverse thinking: what would happen if the business had no testing role? Would the business run faster or better?

From the testing perspective, we can reflect on:

Testing capability: familiarity with the business, ability to identify quality risks from a unique viewpoint.

Technical barriers: whether the role can be replaced by advanced outsourcing or development.

Responsibility fulfillment and feedback, and whether responsibilities extend beyond the testing process.

Delivery efficiency: does testing contribute positively or negatively under heavy, urgent business demands? How does testing help when delivery encounters blockers?

In summary, the value of the testing role is:

Objective: the business needs testing to lower quality risk.

Objective: the organization can afford to maintain a testing role within cost constraints.

Subjective: a high‑ROI testing role can perform quality assurance with a high degree of irreplaceability.

To enhance the transmission and externalization of testing value, we can focus on two directions:

Improve ROI: achieve extremely high efficiency in defect discovery and falsification.

Increase the cost of replacement: continuously innovate, transform production forces, and strengthen technical barriers.

Specific actions include expanding testing responsibilities, developing new techniques, and aligning closely with business to become an indispensable production force.

Below is a competency framework for business testers at different maturity levels:

4. A competent business tester should have:

Deep familiarity with the business line’s logic and technical details.

Proficiency in daily testing processes and the ability to resolve obstacles.

Risk awareness.

Effective collaboration and coordination to drive delivery.

5. An excellent business tester should possess:

Owner mindset and the ability to propose quality risks and suggestions.

Capability to lead complex projects and design reasonable quality assurance plans.

Full‑chain risk foresight.

Strong coordination skills and technical solutions to reduce delivery bottlenecks.

6. A distinguished business tester should demonstrate:

Breaking mental and business boundaries to master end‑to‑end risk control.

Designing and implementing systematic quality assurance solutions tailored to business characteristics.

Handling quality assurance beyond testing, such as large‑scale stability and online issue resolution.

Cross‑team, cross‑department collaboration, altruistic thinking, and innovative problem‑solving that builds technical influence.

These reflections aim to help testers think continuously about their work and drive personal and organizational improvement.