Callisto

About Callisto

Future-Ready O2C. Callisto is a professional platform for credit and Order-to-Cash professionals who want to operate at the highest level. Through insight, training, and global gatherings, we bring together practitioners who are shaping the next generation of O2C. Our programmes, certifications, and live forums are built for teams working inside complex global organisations, particularly Shared Services and Global Business Services environments. From new professionals to experienced leaders, the focus is always the same: stronger judgement, better governance, and more effective execution. Credit sits at the centre of working capital performance. As automation expands and operating models evolve, the expectations placed on O2C teams continue to rise. Callisto exists to support that shift. We believe the function should operate as a true centre of excellence, led by skilled practitioners, supported by strong professional standards, and connected to a global community of peers.