So far, all cloud storage services, with the exception of a few, follow the same formula – there is one root folder, the content of which is synchronized with the cloud. Anything and everything that is dropped into this folder is mirrored to the cloud server, and vice versa. There is no option to filter files based on user defined rules and process only those files that satisfy the conditions. The only limitation that is in effect is the maximum upload file size imposed by the respective services, if any.