The NWP SAF Workshop on Satellite Observations of the Earth System Interfaces was held from 19 to 22 November 2024 at ECMWF. The workshop focused on advancing the exploitation of satellite data in NWP, emphasizing the importance of interface observations that are sensitive to multiple components like the atmosphere, land, sea ice, snow, and the ocean. Key recommendations include enhancing the use of existing and new satellite observations, leveraging machine learning for complex surfaces, and promoting coupled data assimilation for better exploitation of interface observations. The workshop highlighted the need for collaboration among scientific communities and space agencies to address challenges and improve the use of satellite data in NWP. To read the full summary, please go to our Training and Outreach page.