Illustrating how a task analysis can help you define usability goals and tasks, here are some examples. For online shopping, the main goal is to purchase a product. Subtasks involve browsing products, selecting, adding to cart, entering payment and shipping information, confirming the order, and receiving confirmation. Depending on product type, category, and features, as well as payment and shipping options, the actions, inputs, outputs, and feedback vary. Usability goals and metrics may include time, accuracy, completion rate, satisfaction, and trust. Scenarios and tasks could involve finding a specific product or applying a coupon code. For online banking, the main goal is to manage personal finances online. Subtasks involve logging in, viewing account balance, transferring money, paying bills, setting up alerts, and logging out. Actions vary depending on account type, balance transactions, preferences as well as security and privacy features. Usability goals may include ease of use efficiency error rate satisfaction and security. Scenarios could involve checking the account balance or setting up a low balance alert. For online learning the main goal is to learn a new skill or topic online. Subtasks involve enrolling in a course accessing course materials completing assignments participating in discussions taking quizzes and receiving feedback. Depending on course content format objectives as well as learning style pace and progress of the user actions inputs outputs and feedback vary. Usability goals may include engagement retention comprehension achievement and satisfaction. Scenarios could involve downloading course material or submitting an assignment.