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2.7Choosing the Right Technique
| Situation | Best Technique |
|---|---|
| Numeric input with a defined range | BVA + EP |
| Multiple input categories | EP |
| Business rules with condition combinations | Decision Tables |
| Workflow or lifecycle features | State Transition |
| Many parameters, each with few values | Pairwise Testing |
| Unknown territory, no clear requirements | Exploratory Testing |
In practice, experienced QA engineers combine these techniques. For a single feature, you might use EP to identify the partitions, BVA to select specific values, and a decision table to handle the business rule combinations.