FTP is the easiest way to upload files.
Objectives of FTP
The objectives of FTP, as outlined by its RFC, are:
- To promote sharing of files (computer programs and/or data).
- To encourage indirect or implicit use of remote computers.
- To shield a user from variations in file storage systems among different hosts.
- To transfer data reliably and efficiently.
FTP or file transfer protocol is used to connect two computers over the Internet so that the user of one computer can transfer files and perform file commands on the other computer.
source: http://en.wikipedia.org/wiki/File_Transfer_Protocol