Types of Software Testing

Each type of testing answers a different question about the product. Start with the classification guide, then go deeper into the ones your team runs: regression, exploratory, performance, accessibility, mobile, localization, contract and acceptance testing.

Types of Software Testing: A Complete Classification

A complete classification of software testing types - functional, non-functional, manual, automated, unit, integration, system, and more - explained with a simple four-axis model.

Regression Testing: What It Is and How to Do It Right

Everything QA teams need to know about regression testing - what it is, when to run it, how to build and prioritize a regression suite, and which tools to use.

Exploratory Testing: Techniques and Best Practices in 2026

A practical guide to exploratory testing: what it is, when to use it, key techniques like SBTM and tours, the best tools, and how to run structured sessions.

How to Run an Exploratory Testing Session: A Worked Example

Follow one exploratory testing session from start to finish - charter, timebox, session notes, and debrief - using a real password reset example, then keep the findings traceable.

Smoke Testing vs Sanity Testing: Differences Explained

Smoke testing vs sanity testing explained. Learn the difference between smoke and sanity testing, when to use each, and how they fit into your QA process.

User Acceptance Testing: Process and Templates in 2026

A complete UAT guide: types of acceptance testing, entry and exit criteria, who signs off, planning the cycle, environment and data, script templates, and UAT in agile delivery.

Performance Testing: Load, Stress & Soak Testing Explained

Performance testing explained. Compare load, stress, soak, spike and volume testing, pick the right metrics, set thresholds, and read the results correctly.

Accessibility Testing: WCAG 2.2, the EAA & a QA Checklist

Accessibility testing explained. What WCAG 2.2 Level AA requires, what the European Accessibility Act means for product teams, and a practical QA checklist.

Mobile App Testing: Strategy, Device Coverage & Checklist

Mobile app testing explained. Build a device coverage matrix from your own analytics, test interruptions, permissions and connectivity, and ship through store review.

Localization Testing: A Practical i18n Checklist in 2026

Localization testing explained: i18n vs l10n, text expansion, date and currency formats, RTL and bidirectional text, collation, pseudo-localization, and a checklist you can run per locale.

Contract Testing for Microservices in 2026: Pact in Practice

How consumer-driven contract testing catches microservice integration failures without running every service together. The Pact workflow, provider verification and can-i-deploy in CI.

Testing in Production: Feature Flags and Canaries in 2026

Testing in production done responsibly: feature flags as a testing tool, canary releases with real promotion criteria, what observability gives QA, and the guardrails required first.

How to Run a Bug Bash: Format, Rules and Follow-Up in 2026

How to run a bug bash that produces value: when it is worth the cost, writing charters, who to invite, session rules, scoring done properly, and the follow-up that decides everything.

Why Regression Testing Matters & How QA Sphere Helps

Explore the importance of regression testing in software development and learn how QA Sphere streamlines this critical process for both manual and automated testing approaches.