Which Tests Should You Automate First?

The wrong first automation project is "automate everything." It sounds ambitious, then usually creates a brittle test suite nobody trusts.

The better first question is: which failures would hurt the business most if they reached customers?

Automate stable risk first

Good first candidates share three qualities:

1. The journey matters. A failure loses money, trust, data or time.
2. The steps are stable. The flow is not being redesigned every week.
3. The result is clear. The test can tell pass from fail without human judgement.

That points toward forms, checkout, login, booking, payment confirmation, account signup, quote requests, API contracts and repeated back-office workflows. For backend interfaces, adopting API contract testing over full UI automation provides instant schema verification without fragile browser overhead. Meanwhile, for browser journeys, teams must focus on diagnosing and eliminating flaky E2E tests before expanding coverage. It points away from brand-new screens, subjective visual polish and flows where the expected result changes every time the team talks about them.

Do not automate confusion

If humans cannot agree what should happen, automation will not solve it. It will only encode the confusion.

Before writing checks, clarify:

• what the user is trying to do;
• which inputs are valid;
• which errors should appear;
• what data should be created;
• what external services are involved; and
• who owns failures.

This is why QA automation and DevOps belong close together. Tests should feed the release process, and the release process should know what to do when a test fails.

Balance value with maintenance

Every automated test has a maintenance cost. A valuable test that fails clearly is worth that cost. A low-value test that breaks whenever a heading changes is not.

Use this simple scoring:

Question	Higher priority when...
What is the failure cost?	Lost orders, leads, data or trust
How often does it run?	Every release or frequent workflow
How stable is the journey?	Steps are settled
How clear is the result?	Pass or fail is obvious
How hard is manual checking?	Slow, repetitive or easy to forget

Start with the highest combined score, not the longest list.

Keep exploratory testing

Automation checks what you tell it to check. It does not decide whether the page is confusing, whether the offer makes sense, or whether an error message is rude. Human exploratory testing still matters, especially before launches and redesigns.

That boundary is important. As covered in why your website works for you but breaks for customers, testing reduces risk. It does not abolish it.

Connect tests to releases

Automated checks are most useful when they run before a change goes live. A test suite that lives on one laptop and runs "when someone remembers" is better than nothing, but the real value comes when checks become part of release engineering.

If a critical journey fails, the release should wait. If a low-risk check is flaky, someone should decide whether to fix, quarantine or remove it. Ownership keeps the suite trustworthy.

Automate the checks that protect the business, not the checks that make the report look full.