Shared business of enterprises in practice can be described as a transformed approaches to economy and to managing of businesses. It represents a set of activities associated with searching, creating, using of corporate production factors, and with forming of other various socio-economic relation ships, business processes and their results, which may be the subject or the object of sharing. The aim of the article is to create a definition of shared business in theory, the content of which converges to the real, true description display of contemporary society life. The definition will reflect the implementation of new approaches and expressions of entrepreneurship in business practice. The result is a theoretical concept of shared business model, created under concretization of his signs. Concretization of shared business signs in practice is ensured by self-exploration, by acquisition and by results data processing of formalized, personal and electronic interview with owners and managers of small businesses and other stakeholders. The interview is aimed at identifying the extent, rate and the dynamics of the approaches implementation associated with characteristics of shared business, in the environment of shared economy. Separately is interested in the function of business center of services. Methods of investigation are based on multidimensional analysis, sorting of psychographic criteria and on creating of positional chart, they are intended to create a chart of shared business.