The document discusses establishing a Capacity Building System of Systems (CB Sos) to improve discovery and access to capacity building resources through interoperability between existing resource facilities. It proposes a brokered architecture that would allow existing systems to remain autonomous while being connected through mediation components. This would avoid duplicating efforts and provide a more comprehensive view of available materials. The CB Sos is being implemented through collaboration between the EOPOWER and IASON projects, with the goal of eventually involving other relevant GEO working groups.