Here is a graphic I shared a while back on uploading Word documents to Google Drive and then editing them etc. within Drive as Google Docs.
Now you can edit office files right from Gmail as well. If you receive an office file in your gmail account, you now have the option of “editing it with Google Docs” right in the attachment window!
There are also 15 other supported Microsoft filetypes that fall into this as well.
Check out the full article HERE.
Mark Giufre (deTechtive1) 2013