Start with value, not ease
The easiest test to automate is not necessarily the most useful. Start with repeatable, high-value coverage that protects meaningful risk.
Good first candidates
- Critical smoke tests
- P1 regression
- Stable APIs
- Repeatable business rules
- High-frequency manual checks
- Data validation rules
- Cross-browser essentials
- CI quality gates
Use a simple decision model
Choose the right layer
Prefer the lowest effective technical layer. A business rule that can be covered reliably at API or component level should not depend only on UI automation.