The Directorate of Management provides assistance to the Chairman of the Joint Chiefs of Staff and Joint Staff through management, planning and direction of support activities including correspondence administration, budget and finance, action management and archiving, information technology, services, resources and all aspects of staff and information security.

With over 200 members organized into five offices, DOM is one of the largest Joint Staff directorates.

Though the Vice Director of the Joint Staff is under the immediate supervision and guidance of the Director, Joint Staff, he is dual tasked as the director of management. Acting on behalf of the director of management, the five subdivisions provide essential support services which bind numbered Joint Staff directorates into an effective, coordinated team. Subdivisions include the Joint Staff Comptroller, Joint Secretariat, Joint Staff Support Services Office, Joint Staff Security Office, and Office of the Chief Information Officer.

The comptroller manages allocated Joint Staff financial resources, financial resources provided by other agencies for Joint Staff use and Joint Staff input to the Planning, Programming and Budgeting System. The comptroller also oversees the Internal Management Control and Quality Management programs.

The Joint Secretariat establishes information management requirements and manages the corporate Joint Staff decision process to include developing action processing policy and procedures and related administrative systems.

The Joint Staff Support Services Office (JSSSO) provides administrative and logistical support and services, including graphic arts, photography, reproduction, printing, forms and publications management, facilities management, travel, transportation support, document distribution and mail services. The support services staff also provides supply support, office equipment maintenance, telephone service, parking permit control, and DTS.

The Joint Staff Security Office develops and implements personnel and physical security policies and procedures. The office is responsible for the joint staff force protection program, operates one of eight DoD central adjudicative facilities and provides direct security support and services for the joint staff.

The Office of the Chief Information Officer is responsible for the strategic management, governance, and delivery of information technology and capabilities required to support the diverse missions of the Joint Staff. The office provides internal management of Joint Staff IT modernization and acquisitions through policy development, integrated design, contract implementation, and project management. The office manages Joint Staff IT business transformation, portfolio and investment management, and risk assessment. It acquires, manages and operates Joint Staff-wide office automation systems, service desk, network operations, customer support centers, and corporate data base applications. The office assures automated information and information security capabilities through training and monitoring of Joint Staff automated systems and information services.