Study by Benoît Felten, Chief Research Officer, Diffraction Analysis. The standard for 25G PON is being developed through a multi-source agreement (MSA) and ecosystem that comprises over 40 partners from around the world. As service providers around the world are considering or implementing XGS-PON to allow them to deliver multi-gigabit service plans, the need for 25G might seem a long time in the future. This report examines the near-term use cases for 25G technology.