It was a big week for open systems. We had several announcements coming out of the TIP Summit, as well as another example of virtualization benefiting optical access. Elsewhere, cloud and colo companies open their wallets and coherent makes gains.
This edition of the Friday 5 is brought to you by the number 400 -- as in 400 Gigabit Ethernet. Also on tap are submarine network advances, software defined access network advances, and interest in disaggregated optical hardware advancing.