Strategy development is one of the core tasks of corporate management. One of the key methodologies employed is strategic planning, which, however, is facing increasing criticism: the effectiveness of this approach in contributing sustainably to strategy development is particularly questioned. New concepts are needed that can support corporate management in a situation-appropriate manner during strategy development. Mathias Kranz develops a comprehensive, integrative concept for the development and implementation of strategies that breaks away from the previous one-sided focus on strategic planning and highlights additional processes for strategy development. He outlines the framework conditions for the use of various strategy processes and engages with their management. The author makes it clear that strategy processes must be viewed as part of a portfolio.