Most convenient and important innovations which were made are given below.
Firstly, Google Docs, Sheets, and Slides are available for usage at any device you like including phone, tablet and computer. Secondly, Google apps are affordable at any device even without Internet connection, so the user can view and create files offline. This feature makes the servise more convenient anywhere and anytime you need it.
What is more, you can save and change any type of Office files. Also converting them to Google Docs, Sheets, or Slides is available.
At last, there is a function which is called "suggest edit". You may take or decline changes of your document which you have decided to make before.
Working with documents of each type seems to become more and more easy thanks to hight level of last Google upgrading.