As a tester, considering performance quality is crucial to ensure that software applications meet user expectations. Performance refers to how quickly and stably an application responds to user input, handles data volume, and scales to increased loads. To achieve this, it's essential to consider performance during design and development, including response time, throughput, scalability, and availability. QA teams should conduct various types of testing, such as load, stress, reliability/recovery, and scalability tests, to identify performance issues. By incorporating performance into acceptance criteria and the Definition of Done, developers can build quality in earlier stages, reducing the risk and cost associated with implementing performance fixes later on. This proactive approach ensures that software applications are reliable, efficient, and meet user needs, ultimately driving customer satisfaction and loyalty.