The service is headed by the Garda Commissioner, whose immediate subordinates are two deputy commissioners – in charge of "Policing and Security" and "Governance & Strategy", respectively – and a Chief Administrative Officer with responsibility for resource management (personnel, finance, Information and Communications Technology, and accommodation). There is an assistant commissioner for each of the four geographical regions, along with a number dealing with other national support functions. The four geographical regions, each overseen by an assistant commissioner, are:
