The final data product of the STARS mission will be instrument corrected photometric time series and UV spectra. The very nature of the signals we are studying means that point to point variations are very small, and this potentially allows a very large degree of data compression for archiving and distribution.
Processing the raw data will be the reasonability of the various Principle Investigator teams. One year after receiving the data it will be made available to ESA for long-term archiving, and access by the scientific community. We suggest that, as was planned for PRISMA, archiving raw and processed data will be under the responsibility of ESA's Space Science Department, and requests for data will be handled (presumably in an automatic way) there.