The ADAPT project is developing technologies for building a scalable and reliable infrastructure for the long-term access and preservation of digital assets. Our approach uses a distributed object architecture that operates on different levels of abstractions built around grid technologies and web services. Major software components have been prototyped and are currently in use in a number of pilot projects such as the Persistent Archives Project, a joint collaboration between San Diego Supercomputer Center, the University of Maryland, and the National Archives, and the Earth Science Information Partnership (ESIP) Data Grid Project, a joint collaboration between the University of Maryland, George Mason University, and the University of New Hampshire.