A depth-first risk-based testing technique is a method of prioritizing and executing test cases based on the risk level of the features or functions to be tested. In this technique, the test cases with the highest risk are executed first, followed by the test cases with lower risks. This ensures that the most critical and likely areas of failure are tested thoroughly and early in the testing process. Risk Based Testing: Approach, Matrix, Process & Examples - Guru99 References: Certified Tester Advanced Level Test Manager (CTAL-TM) - ISTQB not-for-profit association, ISTQB Test Manager Certification - ISTQB Exams Worldwide - ISTQB Official Registration, [Analytical Test Strategy: A Comprehensive Guide - LambdaTest]