Dealing with Big Data in the context of Official Statistics requires considering complexity of using Big Data in governing perspectives. The kind of knowledge is twofold:

-        knowledge able to enrich the traditional statistics in order to make them more timely and differentiated from the territorial and/or social point of view (e.g., nowcasting)

-        knowledge to be added to the traditional statistics by observing phenomena from different angles through an ex-post perspective

Both approaches may have deep consequences in Official Statistics, in terms of challenges, opportunities, needs and risks.