Definition - What does Application Portability mean?
Application portability is the ability of an application to be portably installed, deployed, accessed and managed - regardless of delivery model. The term defines an application's flexibility when used on multiple platforms or instantly accessed from the Internet, a desktop or network.
Techopedia explains Application Portability
Application portability incorporates multiple capabilities of an application, primarily applications that are globally accessed via the Internet from a Web browser.
When in offline or desktop mode, application portability defines an application’s ability to be executed on most underlying operating system (OS) environments. Application portability also refers to an application that is transferred and executed through a portable device, such as a Universal Serial Bus (USB) pen drive.