Information economy is forcing management to redefine drastically the business models of managerial decision making by leveraging the aspects of interdependence and mutual influence of business and information technology and systems. Such interaction, known as the concept of enterprise architecture (EA) in the international practice, opens up new possibilities for an effective strategy of the enterprise. The article analyzes the conceptual framework of EA and considers the tools and the technology of its deployment.

The article dwells on comprehension of approaches and methods of strategic decision-making under growing instability of external conditions. The author proposes an algorithm for elaborating breakthrough strategic decisions based on diagnostics of a problematic situation, identification of systemic contradictions, which resolving allows to reach breakthrough strategic solutions and to form new business models. Methods and typical techniques for searching such decisions are shown.

Article recalls the history of appearance and development of the “business model” concept since the 50s of the last century. Separately is presented classification of the “business model” concepts existing today among foreign management theorists. Based on the analysis of the comprehension varieties of this term the definition that transmits its fundamental meaning is set forth.