The Defence Communication Services Agency (DCSA) was an agency of the United Kingdom Ministry of Defence responsible for the procurement and delivery of Communications and Information Services (CIS) to the defence community and related public and private sector bodies. The Agency was formed on 1 April 1998, bringing together a range of CIS organisations across all three services. On 31 March 2007 the Agency was subsumed into Defence Equipment & Support, a new organisation bringing together the DPA and DLO, as the Information Systems & Services (ISS) cluster within that organisation.