DEHA’s 3-Layer QA Framework: Engineering Quality as a System

In global IT outsourcing, quality cannot rely on individual expertise or end-of-cycle testing alone. True quality is not an activity — it is a system.

At DEHA, we design quality assurance as an operational foundation. Our 3-layer QA framework — TQA, PQA, and SQA — governs technology, process, and delivery outcomes across the entire project lifecycle.

This is not traditional QA. It is structured engineering governance.

Why a Multi-Layer QA Model Is Necessary

Modern software delivery faces systemic risks:

  • Accumulation of technical debt
  • Security vulnerabilities
  • Lack of transparency in offshore collaboration
  • Process inconsistency
  • Scalability limitations

Single-layer testing at the final phase cannot mitigate these risks. DEHA addresses them structurally through three independent yet interconnected control layers.

TQA – Technical Quality Assurance

Governing the Engineering Foundation

TQA ensures that code quality, system architecture, performance, and security meet measurable internal standards.

Key controls include:

  • Internal code scoring and static analysis
  • Performance benchmark: sub-1-second response time
  • Manual architecture and logic reviews
  • Security validation aligned with OWASP Top 10

Projects are quantitatively evaluated against defined internal thresholds. If standards are not met, corrective action plans are mandatory.

Business Impact:

  • Reduced technical debt
  • Lower security exposure
  • Long-term scalability
  • System stability during growth

TQA ensures that engineering decisions today do not become liabilities tomorrow.

PQA – Process Quality Assurance

Governing How the Product Is Built

High-quality software is the outcome of disciplined processes.

PQA ensures:

  • Standardized development workflows
  • Milestone-based monitoring
  • Transparent reporting and risk tracking
  • Variance control between plan and execution

Business Impact:

  • Predictable delivery timelines
  • Reduced delay risk
  • Transparent offshore collaboration
  • Lifecycle stability

In global IT outsourcing, delivery governance is as critical as engineering capability.

SQA – Software Quality Assurance

Validating Production Readiness

SQA verifies that the final software performs reliably in real-world environments.

Scope includes:

  • Functional testing
  • Regression testing
  • Integration testing
  • Business requirement fullfillment assessment

SQA minimizes operational risk before user exposure and protects client brand reputation.

An Integrated Risk-Control Model

Each layer serves a distinct governance function:

  • TQA: Engineering integrity
  • PQA: Process discipline
  • SQA: Product validation

Together, they form a proactive risk prevention system.

We do not wait for defects to appear. We design systems that make defects structurally unlikely.

Quality as an Operating Foundation

At DEHA, quality assurance is not a final checkpoint. It is embedded into how we operate.

Through our 3-layer QA framework, we ensure:

  • Transparent quality governance
  • Early risk detection
  • Data-driven continuous improvement
  • Stable, secure, and scalable systems

In global IT outsourcing, trust is built through structure — not promises.

Get the latest in tech delivered straight to your inbox!

Subscribe to our newsletter for the latest updates on DEHA news!

Newsletter Subscription

    Thank you for your joining our newsletter!
    We’re thrilled to have you as part of our community.
    In the meantime, if you have any questions you can contact us via:
    Tel: (+84) 3 8790 9838