Microsoft is again selling Galaxy S9 via its US based stores across US. Office, OneDrive, Cortana, Outlook and more apps are pre-installed in this kind of Galaxy S9. Obviously, Microsoft is featuring this apps to promote its own presence in Android world. In the Microsoft’s store Samsung S9 is labeled as Microsoft edition while Samsung claims it is not. In 2015 they had a dispute regarding this issue.
Same happened to S6, S7 and S8, thus it might continue forever. In the store, not only Samsung’s phones are present. Alcatel, HP and Motorola advanced phones are can be seen too.