The three key dimensions of software quality are functionality, reliability, and usability.
Functionality refers to meeting specified requirements and fulfilling the software’s intended purpose.
Reliability implies the ability to perform specified functions accurately and consistently under specific conditions over a defined period of time.
Usability means the ease of use and users’ satisfaction with the software.
By incorporating quality assurance and quality management practices focused on these dimensions, you can make software easy to scale, highly performant, and user-friendly.