At the Library of Congress Designing Storage Architectures meeting on April 15, 2024, Nathan Tallman and Flavia Ruffner from APTrust presented their evolving multi-cloud strategy for digital preservation. Tallman and Ruffner discussed APTrust's transition from a server-based to a container-based architecture, leveraging cloud-native tools while maintaining flexibility to switch between Infrastructure-as-a-Service (IaaS) and Platform-as-a-Service (PaaS) providers. A significant focus was on implementing Wasabi as a non-AWS storage option to enhance vendor diversity, detailing the technical adaptations necessary for integrating the S3 API and the lessons from a Wasabi proof-of-concept test. The presentation concluded with an emphasis on the need for standardized APIs across cloud services to facilitate multi-cloud strategies and mitigate vendor lock-in, calling for formal documentation of the S3 API by standards bodies.

The presentation is available online.

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