Aaron Weiss was named Department of the Navy Chief Information Officer effective September 29, 2019. As DON CIO, he is the Principal Staff Assistant to the Secretary of the Navy for information management, digital, data and cyber strategy. In this role, he is also responsible for reviewing the DON budget proposal for Information Technology (IT) and National Security System (NSS) expenditures and investments and certifying whether it adequately addresses concerns from enterprise efficiency and cybersecurity perspectives.

Previously, he served as Senior Advisor to the Department of Defense CIO. In this role he focused on driving strategy and support for the critical CIO programs, including Joint Artificial Intelligence Center (JAIC), Enterprise Cloud, Cyber, and Command, Control and Communications (C3). He led the effort to develop the DoD Enterprise Cloud Strategy as well as the DoD IT Modernization strategy. Aaron led the first ever CIO accreditation of the $46 billion IT budget across the Department.