For questions specifically about the web interface of the file synchronization and cloud storage service from Google. Do not use along with [google-docs], [google-sheets] or [google-slides] merely because that is where such documents are stored.
Google Drive is a web-based file synchronization service launched by Google on 24-April-2012. It replaces Google Docs and provides 15 GB of free storage (shared amongst Gmail, Google Drive, and Google+ Photos), with the option to rent more.
Questions here on Web Applications should be concerned primarily with the web interface.
There are Macintosh, Windows, Android, and iOS (iPhone/iPad) clients that allow for automatic synchronization to/from local storage (similar to Dropbox).
For questions specific to...
- the computer client, please visit Super User.
- the iOS app, please visit Ask Different. (May also be appropriate for the Mac client.)
- the Android app, please visit Android Enthusiasts.