Expected Benefits of Certification
29.3.1. Quantitative Benefits
The quantitative benefits expected from TQS certification adoption are defined by metric. Specific target values are set for each metric, and changes before and after certification are managed in a measurable form.
29.3.1.1. Defect Density Reduction
Defect density refers to the number of defects found per 1,000 lines of code. A reduction in defect density is expected with TQS certification adoption.
| Metric | Unit | Before Certification (Estimated) | After Certification (Target) | Remarks |
|---|---|---|---|---|
| Defect Density | Cases/KLOC | 5-8 cases | 2-3 cases | Production basis |
| Critical Defect Rate | % | 15-20% | 5% or below | Ratio among total defects |
| Defect Recurrence Rate | % | 25-30% | 10% or below | Repeat rate of same defect types |
| Defect Detection Timing | - | Production | Development/Testing phase | Improved early detection rate |
Defect density reduction is achieved through the following mechanisms.
- Establishing a code quality baseline through formatters and linters
- Early defect detection through high test coverage
- Logic error detection through standardized code review processes
- Automated quality gate application through CI/CD pipelines
29.3.1.2. Test Coverage Improvement
The test coverage criteria, a mandatory requirement of TQS certification, systematically expand the scope of code verification.
| Metric | Unit | TQS Mandatory Criteria | Advanced Grade Target | Premier Grade Target |
|---|---|---|---|---|
| Line Coverage | % | 80% or above | 85% or above | 90% or above |
| Branch Coverage | % | 70% or above | 75% or above | 85% or above |
| Core Logic Coverage | % | 90% or above | 95% or above | 100% |
| Test Execution Time | Minutes | Within 10 minutes | Within 5 minutes | Within 3 minutes |
Test coverage improvement is directly linked to deployment stability. When coverage improves from 80% to 90%, an additional approximately 30% reduction in production defect rate is observed.
29.3.1.3. Build Success Rate Increase
Stable operation of CI/CD pipelines is a key metric for development productivity.
| Metric | Unit | Before Certification (Estimated) | After Certification (Target) |
|---|---|---|---|
| Build Success Rate | % | 80-85% | 95% or above |
| Average Build Time | Minutes | 15-20 minutes | Within 10 minutes |
| Build Failure Root Cause Analysis Time | Minutes | 30 minutes | Within 10 minutes |
| Deployment Frequency | Times/week | 1-2 times | 3-5 times |
Build success rate increase is achieved through the following.
- Eliminating style-related build failures through pre-applied formatters/linters
- Reducing compatibility issues through dependency version standardization
- Reducing intermittent failures (flaky tests) through improved test stability
29.3.1.4. Security Vulnerability Reduction
Systematic application of security criteria enables early detection and elimination of security vulnerabilities.
| Metric | Unit | Before Certification (Estimated) | After Certification (Target) |
|---|---|---|---|
| Remaining Known Vulnerabilities | Cases | 5-10 cases | 0 cases (CVSS 7 or above) |
| Vulnerability Discovery-to-Fix Duration | Days | 30 days or more | Within 7 days |
| Secret Exposure Incidents | Cases | 1-3 cases/year | 0 cases |
| Security Scan Frequency | - | Irregular | Every build |
29.3.2. Qualitative Benefits
These are benefits that are difficult to measure with quantitative metrics but contribute to the organization's technical competence and culture over the long term.
29.3.2.1. Developer Competence Enhancement
The learning and practice required to meet TQS certification criteria naturally enhance developers' technical competence.
- Coding competence: The habit of writing code while adhering to formatters, linters, and conventions cultivates a sense of code quality.
- Testing competence: Writing tests following the Given-When-Then pattern improves test design skills.
- Security competence: Directly implementing input validation, encryption, and access control internalizes security awareness.
- Architecture competence: Repeatedly applying standardized project structures deepens understanding of design patterns.
These competence improvements positively affect not only TQS-certified projects but all projects in which the developers participate.
29.3.2.2. Code Review Culture Establishment
TQS certification includes code review as a mandatory process, fostering a healthy code review culture.
- Mandatory minimum one-person PR review makes code review a routine activity.
- Standardized PR templates enable reviewers to quickly understand changes.
- Formatters/linters automatically handle style issues, allowing reviewers to focus on logic and design.
- Knowledge sharing occurs naturally during the code review process.
The establishment of a code review culture contributes holistically to code quality improvement, knowledge dissemination, and trust building within teams.
29.3.2.3. Technical Documentation Habits
Among TQS certification requirements, API documentation (SpringDoc/Swagger UI), commit message standards (Conventional Commits), and PR templates foster technical documentation habits.
- Documentation for API endpoints is automatically generated alongside code.
- Commit messages clearly record the type and scope of changes.
- PR descriptions systematically record the purpose of changes, scope of impact, and test results.
These documentation habits enhance the traceability of project history and become valuable assets during future handovers or problem analysis.
29.3.2.4. Cross-Team Mobility
When technology stacks and coding conventions are standardized, developer mobility across teams becomes easier.
- The same technology stack is used regardless of which project a developer is assigned to.
- Standardized project structures minimize the time required to understand code.
- The same tools (IDE settings, CI/CD, configuration management) are used, eliminating the need for environment adaptation.
- This increases workforce flexibility and enables rapid personnel reinforcement in emergency situations.
29.3.3. Organization-Level Benefits
TQS certification provides strategic value to the entire organization beyond individual projects.
29.3.3.1. Technical Branding
Operating the TQS certification system externally demonstrates TIENIPIA's technical capabilities and quality management competence.
- Operating a proprietary technical quality certification system indicates the maturity of the technology organization.
- Products bearing the TQS Mark convey to customers that technical quality is systematically managed.
- The TQS system can be introduced through technical blogs, conference presentations, and other venues for technical branding purposes.
29.3.3.2. External Customer Trust
TQS certification serves as a basis of trust in business relationships with external customers.
- It can be stated explicitly that product quality has been verified by an internal certification system.
- It can demonstrate that security requirements are systematically managed.
- TQS certification records and audit results can be submitted during customer audits to establish technical credibility.
29.3.3.3. Recruitment Competitiveness
A systematic technical quality management system has a positive impact on attracting top talent.
- Standardized technology stacks and clear coding conventions demonstrate the orderliness of the development environment.
- An environment with an established code review culture and testing culture is attractive to growth-oriented developers.
- The existence of a proprietary certification system demonstrates the professionalism and investment level of the technology organization.
29.3.3.4. Partner and Vendor Trust Building
TQS certification serves as a common language for quality standards in technical collaboration with partners and vendors.
- TQS standards can be shared with partners to clearly set quality expectations for technical collaboration.
- When integrating APIs with partner companies, TQS API design standards can be shared to ensure compatibility.
- For outsourced development, TQS standards can be used as quality criteria to manage delivery quality.
29.3.4. Benefit Measurement Methods
Methods for systematically measuring and managing the expected benefits of TQS certification are defined.
29.3.4.1. KPI Setting Guide
KPIs for benefit measurement are set according to the following principles.
| Principle | Description | Example |
|---|---|---|
| Measurability | Quantitatively measurable metrics | Test coverage %, build success rate % |
| Relevance | Direct causal relationship with TQS certification | Defect density, security vulnerability count |
| Traceability | Change tracking over time | Monthly production defect count |
| Target Setting | Specific target values established | Build success rate 95% or above achieved |
KPIs are classified into four categories.
| Category | Representative KPIs |
|---|---|
| Code Quality | Defect density, code complexity, duplication rate |
| Testing | Line/branch coverage, test execution time |
| Stability | Build success rate, deployment success rate, MTTR |
| Security | Vulnerability count, vulnerability fix duration |
29.3.4.2. Measurement Frequency
Benefit measurement is performed on the following schedule.
| Frequency | Measurement Items | Reporting Target |
|---|---|---|
| Real-time | Build success rate, test coverage | CI/CD dashboard |
| Weekly | Defect count, code review time | Team leaders |
| Monthly | Defect density, security vulnerabilities, deployment frequency | TQS Committee |
| Quarterly | Comprehensive benefit analysis, KPI achievement rate | Executive leadership |
| Annually | Annual trend analysis, KPI target reset | Executive leadership + company-wide |
29.3.4.3. Dashboard Configuration
A dashboard configuration is recommended for visually managing benefit measurement data.
The key widgets to include in the dashboard are as follows.
- Code Quality Overview: Average test coverage across all projects, defect density trends
- Build Status: Build success rate by project, failure cause classification
- Security Status: Count of unresolved vulnerabilities, classification by CVSS rating
- Certification Status: Number of certified projects, grade distribution, projects due for renewal
- Trends: Monthly/quarterly trend graphs of key KPIs
The dashboard should be placed on the internal portal to be accessible to both the TQS Committee and project teams. If real-time data integration is difficult, updates must be made at minimum on a daily basis.