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* 1980: Central Computer and Telecommunications Agency (CCTA) evaluate analysis and design methods.
* 1981: Consultants working for Learmonth & Burchett Management Systems, led by John Hall, chosen to develop SSADM v1.
* 1982: John Hall and Keith Robinson left
* 1983: SSADM made mandatory for all new information system developments
* 1984: Version 2 of SSADM released
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