As Ethernet technology is emerging, the Ethernet Network migration path has shifted from 10G-40G-100G towards 10G-25G-100G networking speeds. 25G has become the dominant step in the path towards 100G, because it is a more efficient and more convenient step from 10G to 100G, mostly because of the following factors. Size – from hardware perspective – 25G optical transceivers are manufactured in SFP28 form factor shape, which have the same size shell as SFP+ transceivers which give 2.5 times increase in speed, at the same time occupying the same space on equipment front panels. Power – 25G SFP28 optical module power consumption levels are the same as predecessor 10G SFP+ modules. Backwards Compatibility – 25G SFP28 transceivers are backwards compatible with 10G SFP+ ports. Future Proof – 100G modules consist of 4 parallel 25G channels, using 25G modules in network design becomes a future proof step towards 100G speeds. Cabling Infrastructure – 25G is running on the same 1G/10G Network Cabling Infrastructure operators use now.