Knowledge Hub Jobs & Growth (Part I)  Global Gateway Support Mechanism (GGSM) The Action will contribute to reduce the infrastructure gap by enhancing capacity and skills development of decision makers, agencies and regulators, responsible for the policy and regulatory frameworks, related to the development of the connectivity agenda and the application of good practices on quality infrastructure throughout the infrastructure life cycle, in particular for the transport sector, with a focus on decarbonisation, resilience, operation and maintenance.