Abstract
<jats:p> The subject of the study is the relationship between the informational support of public procurement and its effectiveness, including the context of minimizing appeals (in administrative and judicial procedures). The author emphasizes the electronization and digitalization of public procurement in the context of the stated research topic. In the author's understanding, electronization is a form, while digitalization is an algorithm for carrying out procurement (in a broad sense: not only as a procedure, but as a legal relationship, including contractual obligations). The author examines and evaluates the role of operators of electronic trading platforms in public procurement, noting that, while not being direct subjects of contracting, they influence the results of the contract itself. The article analyzes Eurasian cooperation in terms of informational collaboration, highlighting the critical component of mutual recognition of electronic digital signatures. The methodology of the work is presented through general scientific research methods, such as analysis and synthesis, deduction, dialectics, systematic and comparative methods, as well as specific methods, in particular, formal legal analysis. The novelty of the research presented in the article lies in the institutional approach to assessing the informational support of public procurement (for state and municipal needs); the author has identified causal relationships between information and the effectiveness of procurement. Furthermore, the author proposes for the first time an understanding of the institutional content of procurement information in its relationship with the administrative control of public procurement. Judicial control is not analyzed in the article as it is a separate subject of research due to its procedural specificity. The author also concludes that the activities of electronic trading platform operators influence the effectiveness of procurements: while not being direct participants in the contractual relationships between the customer and the supplier, they determine the contractual obligations that arise subsequently. The author forecasts the necessity of mutual recognition of electronic digital signatures at the level of the EAEU, without which the formation of a common market for public procurement in the Eurasian space will be impossible. </jats:p>