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The Archives Transfer Tool is a web-based tool transfer app for donors to transfer digital material (often for MIT community groups and members). A transfer will most likely have been set up by the Collections Team and the digital archivist and the files can be found in the "erst" folder of the submission drive. The instructions at the link above explain how to confirm the transfer and get it ready for processing.
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Exactly is a tool for creating bags (based on the BagIt specification). If you are acquiring material that cannot be sent remotely or are confident that material being transferred is very straightforward and doesn’t need to be scanned for viruses, PII, or characterized before entering Archivematica, we can put it in a bag to ensure the transfer has checksums (to ensure nothing changes when moved) and some minimal metadata. Exactly currently has a 150 GB limit per transfer, if you are moving content that exceeds that limit, please consult the digital archivist.