PPDM is a free software package from Nuance that is bundled with most Ricoh MFP's. One license only, allows the user to connect via server to set customer scan applications at the PC. Like scan2excel, scan2word, scan2sharepoint (i believe), plus searchable .pdfs, pdf fillable forms, data extraction (have not used this yet).
SAS, software as a service. Most companies are moving to this model such as Print Audit has now done with Print Audit Secure. Other SAS models would be Document Mall from Ricoh. Hope this helps!