# Associating Code With Tests

SeaLights intelligently maps tests to their corresponding code sections, enabling efficient test selection. Here are the three primary methods employed:

### **Statistical Modeling**

* Leverages **machine learning** to analyze each test's impact on code during parallel testing.
* Gradually refines code-to-test mapping for **increasing accuracy and efficiency** over time.

### **One-to-One Mapping (with OpenTelemetry)**

* Uses **OpenTelemetry instrumentation** to capture data on every application operation.
* Precisely maps tests to code methods based on **comprehensive request tracking** throughout your system.

### **Calibration (with Sequential Testing)**

* Employs **sequential testing** to simulate one-to-one mapping results.
* Offers **immediate and accurate mapping** but can be time-consuming compared to other methods.

***

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[Statistical modeling](/knowledgebase/test-optimization/how-it-works/associating-code-with-tests/statistical-modeling.md)
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[One-to-One Mapping](/knowledgebase/test-optimization/how-it-works/associating-code-with-tests/one-to-one-mapping.md)
{% endcontent-ref %}

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[Calibration](/knowledgebase/test-optimization/how-it-works/associating-code-with-tests/calibration.md)
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