E-documents can be copied without loss of quality. Together with the ease of manipulation this compounds the problem of establishing authenticity. Restoration of e-documents must be considered as part of preservation. E-documents have structures that are, at least to a part, logical constructs. E-documents are intimately tied to the technology used for their creation.
Technological development gives new dimensions to maintenance and preservation.
Technological obsolescence must be considered especially. Physical attrition of the information carrier is also a problem. Access to an e-document can be equivalent to having it. In electronic publishing the traditional steps between content owners and users are changing in scope and nature. Technological convergence between telecommunications, cable and ether media is an example of how traditional roles change, and of how actors who were in separate business sectors now are in competition with each other.