This paper aims to analyse and evaluate the state of the entrepreneurial ecosystem of international business in the transition economy based on the evidence of the southern region of Ukraine. The tasks of the study are (i) to identify the presence of components of the international business ecosystem and their quality depending on the level of development of the transition economy (policy, markets, finance, human capital, culture, support); (ii) to assess the current state of the components of the international business ecosystem; (iii) to identify constraining factors for the functioning of the regional entrepreneurial ecosystem for their further consideration when adjusting the trajectory of the development of the transition economy. The model of Isenberg was used to observe the structure of the ecosystem. The international ratings (KOF Index of Globalization, Global Competitiveness Index, Doing Business, etc.), the data of the State Statistics Service of Ukraine, national laws, etc. were used for the qualitative measurement of the ecosystem performance. An online survey was conducted to assess the current state of the ecosystem and to identify the restraining factors of its functioning. The research results demonstrate that all domains of an international business ecosystem are in the process of formation. 80% of respondents rated domains' performance at three points on a 5-point scale, indicating poor functioning the ecosystem. The respondents of the survey represent several industries but mostly agro-industrial complex. The restraining factors are ineffective government policy; business-unfriendly legislation; limited access to the infrastructure; insecurity of property rights; inefficient business support systems, etc. The research results show that almost all components of the ecosystem are less efficient in Ukraine than in Europe, except for the entrepreneurs' intentions of networking and collaboration development. The paper proposed original research on the institutional context of the ecosystem in the transition economy. The study is built on the idea of the specific regional peculiarities of entrepreneurial ecosystems and the impact of transformational processes of the economy of the country. The results of the study can be used as a basis for a scientific focus on the policy of improving the entrepreneurial ecosystem. The article empirically expands the knowledge of entrepreneurial ecosystems and shows the potential and benefits of a complete integrated ecosystem for overall regional development.
