Resumen
The directions of the development and use of digital technologies in scientific activities based on digital platforms, the significance and role of digital libraries in the formation of such platforms, as well as the problems of ensuring the integration (connectivity) of the extracted information are discussed. Approaches to the creation of scientific information spaces as subspaces of a single information space are considered. The concept of a metadata factory is introduced as a system of interconnected software tools aimed at creating, processing, storing and managing metadata of digital library objects and allowing to integrate the created digital collections into aggregating digital scientific libraries. A number of tasks related to the construction of a metadata factory for the Lobachevskii-DML digital mathematical library have been solved. It is proposed to use this implemented metadata factory as an element of the ecosystem of any scientific digital platform.