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Deliberate and emergent strategies may be conceived as two ends of a continuum along which real‐world strategies lie. This paper seeks to develop this notion, and some basic issues related to strategic choice, by elaborating along this continuum various types of strategies uncovered in research. These include strategies labelled planned, entrepreneurial, ideological, umbrella, process, unconnected, consensus and imposed.

A field study of 25 strategic decision processes, together with a review of the related empirical literature, suggests that a basic structure underlies these "unstructured" processes. This structure is described in terms of 12 elements: 3 central phases, 3 sets of supporting routines, and 6 sets of dynamic factors. This paper discusses each of these elements in turn, and then proposes a general model to describe the interrelationships among them. The 25 strategic decision processes studied are then shown to fall into 7 types of path configurations through the model.' The authors wish to express their appreciation to Richard Cyert for a number of helpful comments he made as discussant for an earlier version of this paper presented at the TIMS XX International Meeting, and to Danny Miller for his help in data analysis and his many useful suggestions.

The literature on strategy formation is in large part theoretical but not empirical, and the usual definition of "strategy" encourages the notion that strategies, as we recognize them ex post facto, are deliberate plans conceived in advance of the making of specific decisions. By defining a strategy as "a pattern in a stream of decisions," we are able to research strategy formation in a broad descriptive context. Specifically, we can study both strategies that were intended and those that were, realized .despite intentions. A research program suggested by this definition is outlined, and two of the completed studies are then reviewed--the strategies of Volkswagenwerk from 1934 to 1974 and of the United States government in Vietnam from 1950 to 1973. Some general conclusions suggested by these studies are then presented in terms of three central themes: that strategy formation can fruitfully be viewed as the interplay between a dynamic environment and bureaucratic momentum, with leadership mediating between the two forces; that strategy formation over time appears to follow some important patterns in organizations, notably life cycles and distinct change-continuity cycles within these; and that the study of the interplay between intended and realized strategies may lead us to the heart of this, complex organizational process.

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