Compatibility testing ensures the application works seamlessly across different devices, screen sizes, and resolutions, a crucial aspect for a mobile banking app.

Security Testing involves analyzing the system's ability to handle unexpected inputs and outputs securely. It helps identify vulnerabilities and weaknesses in the software that could be exploited by malicious entities. This type of testing is crucial for ensuring the robustness of the application against security threats.

Security testing is a type of non-functional testing that focuses on identifying vulnerabilities and ensuring the system's security. Scalability and reliability testing are also non-functional aspects.

Traceability matrices are commonly used in Use Case Testing to establish a link between the requirements and the corresponding use cases. By maintaining this traceability, testers can identify potential issues, track the coverage of requirements, and refine use cases to ensure comprehensive testing. It provides a structured approach to managing and aligning the test scenarios with the specified requirements, enhancing the effectiveness of Use Case Testing.

Pairwise testing, also known as combinatorial testing, focuses on efficiently covering various combinations of input parameters by testing all possible pairs. This approach helps reduce the number of test cases needed while ensuring comprehensive coverage of potential input interactions.

To address stakeholder concerns about the risks of frequent deployments in CI/CD, it is crucial to communicate the benefits and provide a comprehensive risk mitigation plan. Frequent automated testing helps ensure the reliability of deployments, while features like Blue-Green Deployment and Gradual Rollout with Feature Flags offer strategies to minimize potential issues and roll back changes if needed.

Streamlining the Defect Lifecycle involves adopting strategies such as implementing automated testing and continuous monitoring, establishing clear communication channels within teams, conducting regular root cause analysis, and trend analysis. Additionally, implementing a robust change management process helps manage the introduction of changes, minimizing the occurrence of defects and ensuring efficient defect management throughout the software development lifecycle.

Exploratory Testing is an unscripted testing approach where testers explore the application dynamically. It emphasizes informal testing, allowing testers to use their domain knowledge, creativity, and intuition to discover defects that might be missed in scripted testing methods.

Performance testing involves measuring the system's response time under different loads to evaluate its efficiency, speed, and overall performance. This helps ensure that the system can handle various levels of load without compromising response times and functionality.

Collective Ownership is a key principle in Agile and DevOps, promoting cross-functional collaboration and shared responsibilities among team members. This principle emphasizes that everyone in the team is responsible for the overall success of the project, fostering a collaborative and cooperative working environment. It aligns with the Agile value of individuals and interactions over processes and tools.