A public service network worth £20 million is set to go ahead after the signing of a joint contract between East Sussex and Brighton councils.
The network, provided by MDNX, will include the two councils and other public sector bodies including schools, police, fire and rescue services.
The PSN is also expected to create cost savings by providing the infrastructure for future shared service contracts and make better use of future cloud services.
The service is expected to be delivered by the end of August to around 270 public sector bodies across the two councils.