From a frustrating and fiddly experience, you're suddenly given a reasonably powerful word-processing machine with which you can happily create documents.
We also used the device in portrait mode and found it still makes a fantastic word-processing machine, and it shouldn't be a surprise that Microsoft had one eye on the enterprise market.
Amazon built X-Ray using its expertise in language processing and machine learning, access to significant storage and computing resources with Amazon S3 and EC2, and a deep library of book and character information.