  We discuss here our vision for an Open-Science platform for computational
Materials Science. Such a platform needs to rely on three pillars, consisting
of 1) open data generation tools (including the simulation codes, the
scientific workflows and the infrastructure for automation and
provenance-tracking); 2) an open integration platform where these tools
interact in an easily accessible way and computations are coordinated by
automated workflows; and 3) support for seamless code and data sharing through
portals that are FAIR-compliant and compatible with data-management plans. As a
practical implementation, we show how such a platform in a few examples and
focusing in particular on the combination of the AiiDA infrastructure and the
Materials Cloud web portal.
