FTP (File Transfer Protocol) is a protocol used to transfer files between computers on the Internet. It is a way of transferring files from one computer to another by establishing a connection between the two computers and transferring files via this connection.

FTP is often used by web developers and IT professionals to transfer files between a local computer and a remote server. With FTP, files can be uploaded to a server or downloaded from a server.

To use FTP, you need an FTP client, a piece of software that is installed on your computer and allows you to transfer files via an FTP connection. There are many different FTP clients, both free and paid, which are provided by various providers.

FTP is an important part of web development as it allows website developers to quickly and easily upload files to a server and manage the website files on the server. However, FTP is not particularly secure as it transmits over an unencrypted connection. Therefore, SFTP (Secure File Transfer Protocol) or FTPS (FTP over SSL/TLS), which use an encrypted connection, are often used today to increase the security of file transfers.