Which type of testing focuses on unit level performance?

The focus on unit level performance is best captured by technical testing, which typically involves evaluating individual components or units of a software application to ensure that they function correctly and meet specified requirements. This type of testing is essential during the development phase, as it helps identify issues at a granular level before they can propagate to subsequent stages of testing or deployment.

Unit testing, which is a fundamental aspect of technical testing, is specifically designed to validate the performance and behavior of small, isolated pieces of code—often single functions or methods—allowing developers to ensure that each unit operates as intended. By detecting and fixing bugs early in the development process through technical testing, development teams can enhance the overall quality and reliability of the software.

Other testing types, such as user acceptance testing, integration testing, and regression testing, focus on different aspects: user acceptance testing confirms that the system meets user needs, integration testing evaluates how well different components work together, and regression testing checks that new changes do not adversely affect existing functionality. Therefore, technical testing indeed centers on unit level performance, making it the correct answer.