Test case prioritization (TCP) is a strategic approach to managing software regression testing by focusing on the most critical test cases to ensure application quality without testing all possible scenarios. As software applications grow in complexity, QA teams often face resource constraints that prevent exhaustive testing. Data-driven TCP leverages historical test data, defect history, and code complexity analysis to prioritize tests accurately, enhancing both the efficiency and effectiveness of regression testing. This method not only identifies high-risk areas that require immediate attention but also helps in maintaining the balance between application quality and speed of delivery, essential for staying competitive in the fast-paced business environment. By utilizing analytics such as defect detection rates and historical failure data, teams can optimize test execution schedules, focusing resources on the most vulnerable code areas and adjusting priorities as the software evolves. Modern tools like AI and machine learning are increasingly used to automate and refine this process, enabling more precise and adaptable test prioritization and allowing QA teams to maintain high standards of quality while meeting delivery timelines.