What are the different usability testing techniques used in the SDLC?

There are several usability testing techniques used in the Software Development Life Cycle (SDLC). Some of the commonly used techniques include:

1. Heuristic Evaluation: This technique involves experts evaluating the user interface based on a set of predefined usability principles or heuristics.

2. User Testing: In this technique, real users are involved in testing the software to identify any usability issues. Users are given specific tasks to perform, and their interactions and feedback are observed and recorded.

3. Cognitive Walkthrough: This technique involves experts simulating user interactions with the software and evaluating the ease of use and understandability of the interface based on cognitive models.

4. A/B Testing: This technique involves comparing two or more versions of the software or interface to determine which one performs better in terms of usability. Users are randomly assigned to different versions, and their interactions and feedback are analyzed.

5. Surveys and Questionnaires: These techniques involve collecting feedback from users through surveys or questionnaires to assess their satisfaction, ease of use, and overall user experience.

6. Eye Tracking: This technique involves using specialized equipment to track and record users' eye movements while interacting with the software. It helps identify areas of interest, attention, and potential usability issues.

7. Think-Aloud Protocol: In this technique, users are asked to verbalize their thoughts and actions while performing tasks on the software. This provides insights into their decision-making process and helps identify usability issues.

These usability testing techniques help ensure that the software is user-friendly, intuitive, and meets the needs and expectations of its intended users.