The Design School is the most influential school in the process of strategy formulation. It views strategic formulation as a design process that matches an organization's internal aspects to the external environment. The key premises of the Design School are that strategy formation should be a deliberate, conscious process led by the CEO, and strategies are unique designs. Tools include SWOT analysis and the Ashridge Mission Model. Critiques are that it promotes thought over action and can lead to inflexibility. The Design School model is best applied during major shifts or for new organizations to provide clear direction. Its major contribution is developing vocabulary around grand strategy and the fit between opportunities and capabilities.