Software quality refers to the degree to which a software product or system meets the requirements and expectations of its users and stakeholders. It encompasses a wide range of attributes, including functionality, reliability, usability, performance, and maintainability. Software quality is an important consideration in software development, as it can have a significant impact on the success of a project and the satisfaction of customers.

Common Software Quality Characteristics

• Functionality: The software must perform the functions that it was designed to perform.
• Reliability: The software must be free of errors and defects, and must perform consistently and correctly over time.
• Usability: The software must be easy to use and understand for its intended users.
• Performance: The software must perform its functions quickly and efficiently.
• Maintainability: The software must be easy to modify and maintain over time, to accommodate changes in requirements or technology.

Measuring software quality is a complex task and can vary depending on the context. Some organizations use quality standards such as ISO/IEC 9126 or ISO/IEC 25010, which define frameworks for evaluating software quality. Additionally, software testing and quality assurance practices are used to evaluate the software quality.

Detailed Attributes of Software Quality

Software quality refers to how well the product meets the needs of users, stakeholders, and the developing organization, encompassing:

• Functionality: The degree to which the software meets specified requirements, including its ability to perform intended tasks completely.
• Reliability: The degree to which the software is defect-free, performs its functions without failure, handles unexpected inputs or conditions, and recovers from errors.
• Usability: How easy the software is to use and understand, including the quality of the user interface, documentation, and learning curve.
• Performance: The extent to which the software meets performance requirements like response time, throughput, and resource usage.
• Maintainability: How easily the software can be modified and updated, including ease of making changes, testing, and understanding the system.