According to me Amazon Cloud Drive -- is targeting to the users who have data in cloud and want to get some better services around their data -- more towards the amazon services, this is good for people who use amazon services.
Dropbox do more then what Amazon Cloud Drive does --- it is more concentrated at data in your system and cloud storage as way to make it work.
Amazon CloudDrive is more on data at your cloud and Dropbox is a solution to the data at you system. I still use my system as my primary storage for my data -- for me Dropbox/IDrivesync make lot of value.
Dropbox do more then what Amazon Cloud Drive does --- it is more concentrated at data in your system and cloud storage as way to make it work.
Amazon CloudDrive is more on data at your cloud and Dropbox is a solution to the data at you system. I still use my system as my primary storage for my data -- for me Dropbox/IDrivesync make lot of value.