Phase One completion represents a significant milestone in the transition to Linked Data operations. At the conclusion of this phase, libraries will be situated such that their entire record collection and ongoing record creation and maintenance will support Linked Data operations, and they will be able to deliver and ingest Linked Data records. Implementation timelines for Phase One are dependent on vendor implementation timelines for all but those libraries that currently implement open source ILS and have the expertise to add the needed functionality to the ILS. Some commercial ILS systems already contain the necessary URI lookup and insertion functionality. In all circumstances, the cost of implementing Phase One is minimal, as is the effect on cataloging workflows.