What is transferring files or data?
'File' means something that holds informations within a system. 'Transfer' means to move something from one place to another.
Data transfer is the process of copying data from one location to another. The transferred data may be transformed in transit, or arrive at its destination as-is.
When the transfer process results in two copies of the data, this is known as data replication. If the original data source is to become obsolete, it’s called data migration.