 NCSS was acquired by Dun & Bradstreet in 1979; renamed DBCS (Dun & Bradstreet Computer Services); increased its focus on the NOMAD product; changed its business strategy to embrace VM and other platforms; and in the process discontinued support and development of VP/CSS, probably the last non-VM fork of CP/CMS.Interactive Data Corporation (IDC) followed a plan similar to that of National CSS, selling time-sharing services based on the CP/CMS platform.Its focus at the time was in financial services.