Pazflor was the world-first large-scale subsea separation system when it started in 2011. After 12 years of successful operations, it is time to take a step back and look at the many lessons learnt through this period. This presentation will start by presenting the original design, followed by a discussion on the return of operational experiences and concluding with TotalEnergies vision for the future of subsea separation technologies, in particular for ultra deepwater developments.