FTP is an abbreviation of File Transfer Protocol which is a way to transfer files over the internet. Usually, FTP is used to transfer files from your computer to online directory like your WordPress web hosting server.
Throughout our articles, you will see us using WinSCP, a popular and easy to use FTP software.
Back in the days, using FTP was the most popular method to transfer even large files but the advancement of technology and internet speed makes it less popular now. Its also because other more robust options are available to internet users nowadays like websites offering to transfer large files, Dropbox, Onedrive and other well-known options.
See our article on how to setup an FTP account for WordPress