1. A method comprising: receiving, by a particular electronic device of a private cloud of electronic devices belonging to a user, a given data item; classifying, by the particular electronic device, the given data item to determine a class of the given data item; and based on the classifying, determining, by the particular electronic device, at least one action to apply to the given data item according to a predetermined data management policy, where the predetermined data management policy specifies a plurality of actions to apply for different classes of data items, the plurality of actions including synchronizing a data item with at least another electronic device of the private cloud, placing a hold on a data item, and sharing a data item among users.