Shattering the Ephemeral Storage Cost Barrier for Data-Intensive Serverless Workflows. - Shyam Jesalpura; Dmitrii Ustiugov; Michal Baczun; Bora A. Malper; Rustem Feyzkhanov; Edouard Bugnion; Marios Kogias; Boris Grot (SESAME@EuroSys, 2025)