Datacosa workspaces, connect to Datasources either in oflline or in online mode. Data analysts can select the workspace connection mode while prepering data for the workspace. Online mode directly accesses the data source and execute online queries while offline mode pulls the data from the data source to high performance Datacosa Data Node (DDN). System then executes queries against DDN resulting in very fast queries and more interactive dashboards. If you already have a high performance data warehouse or you need instant data updates we recommend going for online mode. For any other scenario offline mode should be the preferred choice.