What is APN? – APN (All Photonics Network) is a delay-managed network foundation promoted by NTT as part of the IOWN concept. To illustrate the difference, imagine traditional networks as flights without fixed arrival times, while APN is like a non-stop flight with a guaranteed arrival time. APN enables greater capacity, less delay and lower power consumption, since APN is a new network connecting all network nodes only with photonic, without any conversion between photonic and electricity. Expl