In 2008, Portico introduced its E-Book Preservation Service to the publishing community to accommodate the rapidly rising production and use of e-books by the scholarly community; in 2011, library participation began. This service operates on a community model, like the E-Journals Preservation Service, through which both publishers and libraries help to defray the ongoing costs of operating the archive, including the IT infrastructure set up to ingest, archive, and migrate the content committed to the archive.
Access scenarios or “trigger events” mirror those of the E-Journal Preservation Service:
When e-book titles have “triggered,” they are available to all participants in the Portico E-Book Preservation Service, regardless of whether the participating institution has previously licensed the content.
A significant number of e-books are available for perpetual access if needed.