Performance Testing with k6: A Practical Guide for Product Teams
Learn how to plan load, stress and soak tests with k6, set meaningful thresholds and fit performance testing into CI before your next big launch.
← All articlesTesting & QA
Building a test automation strategy that actually pays off
Which tests to automate first, how to structure a test pyramid, choosing between Playwright, Cypress and Selenium, and keeping automated suites fast and reliable.
Test automation promises faster releases and fewer bugs, yet many teams end up with slow, flaky suites nobody trusts. The difference between the two outcomes is strategy: what you automate, at which level, and how you maintain it.
Start with the test pyramid
A healthy suite has many fast unit tests, a solid layer of API and integration tests, and a small number of end-to-end UI tests covering the most important user journeys.
- Unit tests check individual functions and components. They run in milliseconds and pinpoint failures precisely.
- API / integration tests check that services, databases and third-party integrations work together. They are fast and stable.
- End-to-end tests drive the real UI in a browser or device. They give the most confidence but are the slowest and most fragile — so keep them focused.
What to automate first
Prioritise by risk and repetition:
- Critical revenue paths — sign-up, login, checkout, payments.
- Flows that break often or are painful to test by hand.
- Regression checks that run before every release.
Leave exploratory testing, usability checks and rapidly changing features to skilled manual testers. Automation and manual QA complement each other.
Choosing a tool
| Tool | Strengths |
|---|---|
| Playwright | Fast, reliable, multi-browser, auto-waiting, great tracing and parallel runs |
| Cypress | Excellent developer experience and debugging for web apps |
| Selenium | Mature, language-agnostic, huge ecosystem |
| Appium | Cross-platform mobile automation for iOS and Android |
For most new web projects we recommend Playwright for end-to-end tests and lightweight API tests in the same codebase.
Keep suites fast and trustworthy
- Run tests in CI on every pull request, in parallel.
- Use stable selectors such as test IDs, not brittle CSS paths.
- Control test data with seeded environments or API set-up, rather than relying on shared state.
- Quarantine flaky tests immediately and fix the root cause.
- Track metrics: run time, failure rate and escaped defects.
Measuring the payoff
Good automation shows up as shorter release cycles, fewer production incidents and less time spent on repetitive manual regression. Review those numbers every quarter and adjust coverage.
Need help?
AkMo’s QA engineers design automation strategies, build Playwright, Cypress and Appium suites and plug them into your CI. Learn about our software testing services or talk to us.