The Chrome OS is a fast growing operating system of Google that has the ability to run Android apps. This is in addition to the breadth of apps that is available in Chrome OS.
On the other hand, there are other Chromebooks which are not suitable with Microsoft Office apps for Android. Microsoft confirmed that these are just teething issues and Chromebook will soon after be allowed to run Office apps for Android without any trouble.
It was reported in 9to5Google that some ASUS Chromebook Flip users have previously encountered a problem when a message saying "unsupported on this device" appeared when they tried to download Microsoft Office or any of the software within the suite including Microsoft Word, PowerPoint, Excel or OneNote.
Meanwhile, other Chromebook users have not encountered any problem which led others to question whether or not Microsoft blocked some Chromebook users to use these apps. It should be noted that a crucial feather will be added to Chrome's OS cap if there is a presence of Microsoft Office and it increases appeal to enterprise users.
Chrome OS devices actually support Microsoft Office for Android via the Google Play Store. Microsoft said that in order to provide the best experience for Chromebook users, they decided to partner with Google Play while Chrome OS is in beta. Microsoft also said that they are planning to make the MS Office available to devices which are compatible.
Chrome OS devices having screen sizes that are less than or equal to 10.1-inch will be allowed to open or edit Office documents for free just like other platforms. However, if you want to have a more advanced feature, you need to subscribe to Office 365.
If the display of the device is bigger than 10.1 inches, everything requires a paid subscription except for viewing documents which is free.