Building a Quality Assurance System Through a Product’s Lifecycle

When deciding whether to invest in a quality‑assurance (QA) system, the business model matters: short‑term, one‑off B2B delivery projects need only meet acceptance criteria, while long‑lived self‑developed products (IaaS, PaaS, SaaS, or B2C) benefit from a systematic QA framework.

Product Inception Phase

Rapid requirement iteration and frequent scope changes characterize this stage, so heavy QA infrastructure is discouraged. The focus should be on throughput of requirement handling. The minimum QA baseline is functional and interface testing to ensure basic product quality, with optional lightweight test processes, online monitoring, and incident response. A retrospective loop can be added when resources allow.

Product Growth Phase

As traffic surges and system complexity rises, the QA effort expands to include performance testing (addressing capacity and stability under load), automation testing (improving test efficiency), and environment‑stability governance (ensuring sufficient, stable test environments). The testing team must also collaborate closely with product, development, and operations on requirement reviews, test‑case reviews, change‑risk assessments, and monitoring enhancements.

Product Maturity Phase

With stable demand and traffic, the focus shifts to refined quality, service stability, and development efficiency. QA activities move toward “test left‑shift” (strengthening reviews and risk handling during requirements) and “test right‑shift” (emphasizing delivery‑time quality, rapid incident response, and post‑mortem improvements). Key practices include tighter process control, data‑driven metrics, code‑branch and version management, and integrating performance and automated tests into CI/CD pipelines.

Product Decline Phase

Requirement changes dwindle and team workload drops sharply. Resources are reallocated to new business lines, and QA effort focuses on maintaining existing functionality without introducing new defects. The phase may be illustrated by examples such as Pinduoduo’s Temu project, where the domestic product sees minimal iteration and only routine maintenance.

Overall, a QA system’s lifecycle must align with the company’s business trajectory; heavy investment is justified only when the product’s lifespan and revenue model support sustained QA activities.