The themes of corporate entrepreneurship can be approached from many angles: they call for an examination, on the one hand, of the conditions in which new activities are undertaken (concept, markets, finance?), and of the entrepreneur's profile, and on the other hand, of the company's ability to create and welcome innovation as guided by the change agents (leadership). Facing this diversity, our article aims to categorise firm's strategies engaged in entrepreneurial behaviours. After having recalled the characteristics of entrepreneurship considered from an individual perspective, we describe corporate entrepreneurship in its different forms, distinguishing its internal facets (revitalisation, sharing innovative approaches, developing new activities) and its external ones (corporate venture capital). Finally, in our last section, we propose a new framework that helps to recognise different types of entrepreneurial companies and encompasses the various initiatives that resort to corporate entrepreneurship.