\MC2E: The Meta-Cloud Computing Environment for Interdisciplinary Studies

The Meta-Cloud Computing Environment (MC2E) is a Russian-Chinese project dedicated to the study of methods and tools for building an information and computing environment for scientific computational experiments and interdisciplinary research, which ended in 2020. Work in this area was focused on the federation principle of organizing computations and data management, providing for the creation of a specialized heterogeneous ecosystem of data centers with virtualized infrastructure and high-performance computers, united by telecommunication resources-a data transmission network. One of the key problems of building such an ecosystem, central to the MC2E project, is the integration of high-performance computers and data processing centers-cloud computing environments based on server clusters. A brief overview of the main results of the project are presented.