Portability testing is the process of determining the degree of ease or difficulty to which a software component or application can be effectively and efficiently transferred from one hardware, software or other operational or usage environment to another.
[1] The test results, defined by the individual needs of the system, are some measurement of how easily the component or application will be to integrate into the environment and these results will then be compared to the software system's non-functional requirement of portability[2] for correctness.
[5] A general guideline for portability testing is that it should be done if the software system is designed to move from one hardware platform, operating system, or web browser to another.
The ISO 9126 (1991) standard breaks down portability testing attributes[5] as Installability, Compatibility, Adaptability and Replaceability.
The ISO 29119 (2013) standard describes Portability with the attributes of Compatibility, Installability, Interoperability and Localization testing.