A computer bureau is a service bureau providing computer services.
These allowed the services of a single large and expensive mainframe computer to be divided up and sold as a fungible commodity.
Development of telecommunications and the first modems encouraged the growth of computer bureau as they allowed immediate access to the computer facilities from a customer's own premises.
The computer bureau model shrank during the 1980s, as cheap commodity computers, particularly the PC clone but also the minicomputer allowed services to be hosted on-premises.
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