Second, the mapping logic of the strategy approaches to the strategy space is questionable, as it assumes that the different states of the strategy space can only be served by one strategy approach. Mapping exercises are different from typology constructions which require mutually exclusive and comprehensively exhaustive (MECE) categories []. Strategy approaches do not have to be mutually exclusive (ME) in their coverage of the strategy space, but they should be comprehensively exhaustive (CE). For instance, the visionary strategy approach and most of the related tools associated with it, which are prescribed to predictable and malleable environments, can also be used in environments characterized by unpredictability and malleability.

BCG’s Strategy Palette is based on three key contingent variables: unpredictability, malleability, and harshness, resulting in five strategy approaches: classical, adaptive, shaping, visionary, and renewal. It serves as a good introduction to strategy approaches and provides guidance on the relevant strategy tools that can be utilized for each approach. However, using only dichotomous variables makes this a more reductionist framework which does not lend itself towards capturing the different degrees of variation and complexity within the variables. Therefore, it does not allow for a more extensive and pertinent set of strategy approaches to be considered. 

The classical strategy approach is most suitable for stable environments which are predictable, where the rules of competition or conduct are well-established, making them non-malleable. These predictable and non-malleable environments are continuations of the past. Hence, the bases for achieving sustainable competitive advantage are known and can be achieved through competitive positioning using differentiation or cost leadership through scale.

The Strategy Palette is one of the more recent and probably the most recognized framework for selecting the appropriate strategy approach. The framework’s use of dichotomous variables with low and high values makes it simple and easy to understand. It does not stop at identifying the strategy approaches, instead further linking them with the relevant strategy tools. BCG also has an interactive website for the strategy tools providing a short description of the tool, its author(s), and the original reference. The linking of the various strategy tools to strategy approaches allows for the creation of a strategy toolbox for each approach that can be used by strategists []. Moreover, the book provides several case studies and vignettes to explicate the strategy approaches.

The renewal strategy approach seeks to ensure the company survives the harsh environment it has found itself in because of a misfit between its strategy and environment, or because it is being subjected to a major external or internal disturbance. Regardless of the factors which have caused the hardship, companies need to, in the short term, first ensure their viability by pursuing a defensive strategy which reduces costs, gets rid of unattractive businesses or products, conserves capital, and saves and frees up resources. Afterwards, they should pursue one of the four strategies mentioned above for the long-term. Therefore, this strategy approach is only temporary in nature.