Аннотация:This paper discusses the principal issue of information models of the digital economy. The presence of a unified model will allow coordinating the efforts of developers from different areas and will ensure the development of unified software. The Soviet experience of introducing computer technology into the national economy was briefly reviewed. The American experience of developing a unified architecture of information systems is considered, the difficulties of introducing a single architecture and its shortcomings are analyzed. In this connection, the work of J. Zachman on the architectures of information systems is considered. The enterprise architecture was presented as "a set of descriptive ideas (models) that are applicable to the description of an Enterprise in accordance with the requirements of management personnel (quality) and which can develop over a certain period (dynamism)." The main idea of the model is to provide the possibility of a sequential description of each individual aspect of the system in coordination with all the others. For any sufficiently complex system, the total number of links, conditions, and rules usually exceeds the possibilities for simultaneous consideration. Next, the e-government model created in NIST, the DoDAF architecture, and the SysML language are discussed. As the prototype of the Russian information model of the digital economy, we propose the newest language Lifecycle Modeling Language.