Objectives:
This article examines the issue of the ambiguous classification of digital platforms within the theory of state power, as well as their position within the structure of informational power. In existing literature, platforms are variously interpreted as market actors, technical infrastructure, or autonomous centers of power - a situation that gives rise to analytical inconsistencies. The article aims to clarify the operational mechanisms of digital platforms within a synthetic model of informational power (SMPI), with a particular focus on their role as a structural-technological interface (STI) that integrates the structural (SPI) and technological (TPI) modules.

Methods:
A theoretical approach based on a systems perspective was employed, complemented by a comparative analysis. The study comprised three stages: (1) a review of the literature on digital platforms and informational power; (2) a conceptual analysis of the SMPI model, leading to the identification of the structural-technological interface (STI) as an analytical category; and (3) a qualitative comparative analysis of three cases (the United States, China, and the European Union) to identify distinct configurations of the SPI–TPI coupling.

Results:
The results indicate that digital platforms function as a coupling mechanism between the structural module (SPI) and the technological module (TPI). They act as a structural-technological interface (STI), enabling the conversion of technological potential into structural outcomes and facilitating the integration of both modules of the model. A comparative analysis identified three configurations of the SPI–TPI coupling: market-based, state-integrated, and normative.

Conclusions:
A state’s informational power is relational in nature, stemming from the quality of the integration between its structural (SPI) and technological (TPI) components, rather than from the level of its isolated resources. Digital platforms function as a structural-technological interface (STI), serving as a mechanism for integrating technology into the state’s institutional structure. In this framework, analyzing informational power requires a systemic approach that accounts for the specific configurations of the SPI–TPI coupling. The article also highlights the need for further research into the operationalization and measurement of these components within comparative analyses.