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TestDel Journal

Insights & Perspectives

Deep dives into software quality, test automation, security, and engineering excellence — from the team that has delivered 5,000+ projects.

IoT Testing13 min read

IoT Testing: What Connected Device Teams Get Wrong (And How to Fix It)

IoT products fail in ways that software-only testing doesn't catch. From firmware edge cases and protocol nightmares to power brownouts, security vulnerabilities, and performance degradation at scale — here's what comprehensive IoT testing actually involves.

T
TestDel IoT Engineering Team
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Security Testing6 min

Security Testing Explained: What It Is, What It Covers, and Why Your Product Needs It

Security testing is one of the most misunderstood disciplines in software quality. Here's a clear breakdown of what it actually involves — from static analysis to penetration testing — and how to decide what your product needs.

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Security Testing6 min

Penetration Testing: What It Is, What to Expect, and How to Get Value From It

Most organisations treat penetration testing as a compliance obligation and get mediocre results. Here's how to commission a pen test that actually finds meaningful vulnerabilities — and what to do with the results.

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Performance Testing7 min

Performance Testing: Load, Stress, Spike, and Soak — What Each Does and When to Use Them

Performance testing isn't one thing — it's four distinct approaches targeting different failure modes. Here's what load, stress, spike, and soak testing each reveal, and how to decide which your product needs before launch.

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Mobile Testing6 min

Mobile App Testing: A Complete Guide for iOS and Android

Mobile testing is harder than web testing. Fragmentation across devices, OS versions, and network conditions creates a testing surface that desktop teams routinely underestimate. Here's how to approach it properly.

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Mobile Testing7 min

TV App Testing: How to QA for LG webOS, Samsung Tizen, and the Living Room Experience

TV app testing is a specialism that most QA teams learn the hard way. Remote-only navigation, 10-foot UI rules, platform certification requirements, and streaming performance under real network conditions all demand a different approach.

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Accessibility11 min

Accessibility Testing: A Complete Guide for Blind, Partially Sighted, Deaf, and Motor-Impaired Users

Accessibility testing is often reduced to running an automated scanner. Real accessibility requires testing for how blind users navigate with JAWS, how partially sighted users experience magnification, how deaf users access audio content, and how motor-impaired users operate via keyboard or switch. Here's how to do it properly.

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eLearning Testing11 min

eLearning Testing: Why EdTech Products Fail and How to Test Them Properly

eLearning products fail in ways that have real consequences — broken SCORM reporting invalidates certifications, assessment logic errors produce wrong scores, and accessibility failures exclude learners with disabilities. Here's how to test them properly.

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Quality Strategy7 min

Why Manual Testing Still Matters in the Age of AI-Generated Code

When AI writes the code and AI writes the tests, who's checking that the right thing was built? The pace of AI-assisted development has made human QA engineers more important—not less.

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Test Automation3 min

Why Your Test Automation Is Failing (And What To Do About It)

Most test automation projects fail within 18 months. Not because automation is hard, but because teams focus on the wrong things. Here's what actually drives long-term automation success.

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Accessibility3 min

WCAG 2.2: What's New and What Your Development Team Needs to Know

WCAG 2.2 introduced nine new success criteria and removed one. Here's a practical breakdown of what changed, what it means for your product, and how to approach compliance without derailing your roadmap.

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Quality Strategy3 min

The Hidden Costs of Poor Software Quality (And How to Quantify Them)

Most organisations dramatically underestimate the true cost of software defects. When you account for late-stage fixes, customer churn, and engineering time, the numbers are often shocking.

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Quality Strategy3 min

Shift-Left Testing: Moving Quality Earlier in Your Development Lifecycle

Shift-left is more than a buzzword—it's a fundamental rethinking of when and how quality is built into software. Here's a practical guide to implementing it without disrupting your current workflow.

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Security3 min

Penetration Testing vs Vulnerability Scanning: What's the Difference and When Do You Need Each?

Many organisations confuse vulnerability scanning with penetration testing, using the cheaper option when their risk profile demands the other. Here's how to tell which you actually need.

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Quality Strategy4 min

How to Choose a QA Testing Partner: 8 Questions to Ask Before You Sign

Not all QA vendors are equal. Here are the eight questions that separate genuinely capable testing partners from those who'll tell you what you want to hear.

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Test Automation4 min

API Testing Best Practices: A Complete Guide for 2025

APIs are the backbone of modern software. Here's how to test them effectively—covering contract testing, security, performance, and the tools that actually work at scale.

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Quality problems we've already solved

See how we have helped teams in financial services, healthcare, and SaaS ship faster with fewer defects reaching production.