Euclid [ESA] is ESA’s mission dedicated to the exploration of the dark universe through the measurement of the properties of the cosmological large-scale structure. IA is strongly involved in this mission, participating in the consortium board, in various science working groups, and in the Survey Design, which is an activity of support to the Euclid Consortium Lead. IA’s Instrumentation and Systems Group is participating in the preparation of the Survey Design, focusing on the development of the ECTile software. This software computes the mission’s Reference Survey, i.e., it produces schedules of the Euclid Deep and Wide surveys, including implementation of all calibrations, compliant with all constraints and requirements.