Shawn Strande, Haisong Cai, Mahidhar Tatineni, Wayne Pfeiffer, Christopher Irving, Amit Majumdar, Dmitry Mishin, Robert S. Sinkovits, Mike Norman, Nicole Wolter, Trevor Cooper, Ilkay Altintas, Marty Kandes, Ismael PĂ©rez, Manu Shantharam, Mary Thomas, Subhashini Sivagnanam, Thomas Hutton. Expanse: Computing without Boundaries: Architecture, Deployment, and Early Operations Experiences of a Supercomputer Designed for the Rapid Evolution in Science and Engineering. In Joseph Paris, Jackie Milhans, Betsy Hillery, Sharon Broude Geva, Patrick Schmitz, Robert S. Sinkovits, editors, PEARC '21: Practice and Experience in Advanced Research Computing, Boston, MA, USA, July 18-22, 2021. ACM, 2021. [doi]