The document summarizes the VRIO framework for evaluating a firm's internal resources and capabilities. The VRIO framework involves assessing whether a resource is valuable, rare, costly to imitate, and whether the firm is organized to exploit the resource. Resources that are valuable, rare, costly to imitate and supported by the firm's organization can provide sustained competitive advantages. Examples of resources include financial, physical, technological, organizational, reputation and human capital resources. Capabilities refer to a firm's ability to utilize its resources effectively to create cost advantages or differentiation.