UNDAC missions are dependent on sufficient support in the form of administrative and logistical arrangements, technical equipment and facilities in which to work and live. This chapter highlights the administrative deployment support provided by OCHA ERS, internal logistics support, and modalities of remote assistance. It introduces to Information and Communications Technology (ICT) and other technical equipment utilised during UNDAC missions, placing particular emphasis on communications equipment and the Global Positioning System (GPS). Additionally, it offers tips and hints for designing an On-Site Operations Coordination Centre (OSOCC) and/or a basecamp.