Lawrence and Lorsch's (1967) seminal work established structural contingency theory by studying how organisations in different industries managed the tension between differentiation (functional specialisation) and integration (cross-functional coordination). They found that effective organisations matched their integrative mechanisms to the complexity of their environment. The framework introduced the concept of integrative devices and their six determinants. Although developed in mid-twentieth-century manufacturing organisations, the framework remains the principal theoretical lens for understanding how contemporary integrative devices like RevOps coordinate differentiated subsystems.