Usability engineering focuses on making software products easy to use, learn, and remember.

A/B testing is a method for comparing two versions of a software product to see which one performs better. It is not a common usability engineering method because it does not provide insights into the usability problems of a software product.

Usability is a subset of user experience. User experience encompasses all aspects of a user's interaction with a software product, including usability, aesthetics, and enjoyment.

Error prevention is not a usability heuristic. It is a design principle that aims to prevent users from making errors.

A cognitive walkthrough is a method for identifying usability problems in a software product by simulating the thought process of a user as they interact with the product.

Website traffic is not a common usability metric. It is a measure of the number of people who visit a website, which is not directly related to the usability of the website.

The goal of a focus group in usability engineering is to gather feedback from users on a software product. This feedback can be used to identify usability problems, evaluate the effectiveness of the user interface, and measure user satisfaction.

Project management software is not a common usability engineering tool. It is a tool for managing software development projects.

A heuristic evaluation is a method for identifying usability problems in a software product by using a set of usability heuristics.

API Style Guide is not a common usability engineering standard. It is a style guide for writing application programming interfaces (APIs).

Usability testing is a subset of user testing. User testing is a broader term that encompasses all types of testing that involve users, including usability testing, acceptance testing, and beta testing.

Software developer is not a common usability engineering role. Software developers are responsible for developing software, not for designing or evaluating its usability.

A usability inspection is a method for identifying usability problems in a software product by having a team of experts review the product and identify any potential problems.

Verbal protocol analysis is not a common usability engineering method. It is a method for studying the thought processes of users as they interact with a software product.

A usability goal is a broad statement of what the user wants to achieve. A usability requirement is a specific statement of what the software product must do to meet the usability goal.