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Portico, a digital preservation archive for the scholarly community and a National Digital Information Infrastructure and Preservation Program (NDIIPP) partner, has successfully extended the NDIIPP network to include a diverse and broad set of publishers and libraries through the development of a model that encourages institutions of all sizes to participate in digital preservation. Over the past two and a half years of archive operations, Portico has learned a number of lessons—most importantly that responsiveness to community needs is key to successful preservation.

ABSTRACT. The

There has been tremendous growth in the amount of digital content created by libraries, publishers, cultural institutions and the general public. While there are great benefits to having content available in digital form, digital objects can be extremely short-lived unless proper attention is paid to preservation. Reflecting on our experience with the digital preservation service Portico, we provide background on Portico's history and evolving practice of sustainable preservation of the digital artifacts of scholarly communications. We also provide an overview of the digital preservation landscape as we see it now, with some thoughts on current requirements for preservation, and thoughts on the opportunities and challenges that lie ahead.