This wiki page contains the set of wiki pages which describe design information about SST service.
The latest SST service integration guide and code can be found in the following links:
https://git.trustedfirmware.org/trusted-firmware-m.git/tree/docs/user_guides/services/tfm_sst_integration_guide.md
https://git.trustedfirmware.org/trusted-firmware-m.git/tree/secure_fw/services/secure_storage