My current research is focused on the infrastructure aspects of the Optical Spectrum as a Service (OSaaS) in a multi-vendor, multi-domain environment. After 13 years of operating a pan-European network spanning more than 10000 km in reach, my research has a strong practical touch to it and aims to propose new, easy-to-use methods for operators to implement OSaaS scenarios. I currently work on a Channel Probing methods to estimate channel performance on a given network link.