One of the current challenges with information and communication networks is their lack of flexibility. It takes a lot of work to set up a new optical path between sites. Moreover, it is very difficult to establish optical paths if each site uses different optical transmission devices. Distinguished Researcher Takeru Inoue aims to configure a flexible network that allows us to freely switch between paths. Here, he tells us more about his field: optical path design for large-scale computing infrastructure. © 2021 Nippon Telegraph and Telephone Corp.. All rights reserved.