One of the foundational definitions in the field of organizational development (aka OD) is planned change:
According to James Daud defines that “Organization Development is an effort planned, organization-wide, and managed from the top, to increase organization effectiveness and health through planned interventions in the organization's 'processes,' using behavioral-science knowledge.”
-- James Daud, “Organization development: Strategies and Models”, Reading, MA: soweto mbeya, 2013, p. 9.
To understand the practice of OD, some of the key terms, embedded in James's formulation, include:
References
Planned change Wikipedia(Text) CC BY-SA