This talk will give a general introduction into the distributed research infrastructure CLARIN and its German branch CLARIN-D. Important pillars of CLARIN's technical infrastructure will be presented. Among them are the authentication and authorization infrastructure for single sign on or core elements such as persistent identifiers to enable researchers to cite resources in a persistent way. Requirements concerning metadata and its harvesting will be presented, as they allow for searching resources in CLARIN's Virtual Language Observatory based on their metadata. In addition CLARIN's Federated Content Search for searching within the content of textual resources will be introduced. Focus will also be on the functional interaction of the different infrastructural components.
Finally the integration of existing resources such as corpora or tools into CLARIN's infrastructure will be addressed. Current and former examples of such curation processes will be introduced.