
Peter Drucker published this in 1964 and later described it as the first book on what would come to be called business strategy. Its subject is the economic task of the business, meaning the decisions that determine what the firm sells, to whom, and with what resources.
The analytical apparatus is a set of questions and classifications. Drucker asks managers to identify their firm's actual results areas, which he insists exist only outside the business, and to classify products into categories including today's breadwinners, tomorrow's breadwinners, yesterday's breadwinners, repair jobs, unnecessary specialities and investments in managerial ego. He argues that resources concentrate naturally on problems and that management must force them onto opportunities instead. He introduces the observation, later associated with the Pareto principle in business, that a small number of products, customers and orders typically produce most of the revenue while costs are spread evenly across all of them.
He follows with the concentration decision: a business should identify its area of leadership, allocate its best people there, and abandon the rest. The abandonment argument is the book's most demanding and least followed recommendation. The specific product classifications now read as dated management vocabulary, and the analysis assumes a manufacturing firm of the period. The core arguments about concentration, about staffing opportunities rather than problems, and about the necessity of abandonment have been restated by every strategy writer since.
Executives making resource allocation and product portfolio decisions who want the original statement of concentration and abandonment as strategic disciplines.
Management writer and consultant; professor at Bennington, NYU and Claremont Graduate University
He invented management as a field of study, and The Practice of Management and The Effective Executive remain the primary sources every later writer builds on.
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