What is the difference between ISO 9126 and ISO 25010?

ISO 9126 and ISO 25010 are standards for assessing software quality, but ISO 25010 is a more modern and expanded version of ISO 9126.

Main differences:

• ISO 9126 describes a software quality model with 6 characteristics: functionality, reliability, usability, efficiency, maintainability, and portability.

• ISO 25010 extends and clarifies the model by adding new characteristics and subsections. Specifically, ISO 25010 includes 8 quality characteristics, among which:

  • functional suitability
  • performance efficiency
  • compatibility
  • usability
  • reliability
  • security
  • maintainability
  • portability

ISO 25010 describes the characteristics in more detail, taking into account modern requirements, such as security and compatibility, which were less developed in ISO 9126.