Many modern network devices require the use of a TFTP service to obtain files such as firmware updates and network configuration files. These devices receive the location of the TFTP server through a DHCP client option, and then contact the TFTP server to download one or more files. In combination with DHCP, these files provide the full set of information that these devices require for network membership. This is not applicable to Windows servers.
The TFTP service is designed so that an entire file structure can be created and then deployed onto a server as a service. You do this by adding a TFTP deployment role to a TFTP Group. A TFTP Group can contain a folder or directory structure and the files for the service. Individual TFTP files must be smaller than 100 MB.