It’s still task-oriented. So, usability therefore. Quite something else than omni-channel or multi-device. Word, words, words. A rose is a rose is a rose.
“Multitasking involves being able to rapidly switch between different apps and to combine multiple sources of information. Small mobile screens limit users’ ability to see content from different apps at the same time, so current operating-system support for multitasking focuses mostly on switching between different apps. This increases users’ memory load, so mobile designers must help users compare and rapidly retrieve recent items.”