Ingeniería de Sistemas para la Defensa de España, S.A., S.M.E., M.P. (Isdefe), is a company that forms part of the State Institutional Public Sector, incorporated in Madrid on October 17th, 1985.

Isdefe is in house technical service provider and technical service of the General State Administration, and provides engineering and consulting services to public administrations, being the technological tool of reference in the field of Defense and Security and, as such, provides services to the Ministries of Defense, Interior and the rest of the Administration, making its knowledge and experience available to the administrations of other allied countries and international public bodies.

Isdefe projects the knowledge acquired in the area of Defense and Security to other sectors of the General State Administration, of which it is in house technical service provider, such as Space, Public Administration, Air Transport, ICT, Energy.