Hi 021AIGuy, thx for your response. In the core of the solution, Spark, Python and library ff3 are used, see also https://github.com/rebremer/azure-synapse_mask-data_format-preserved-encryption/blob/main/Synapse/mask_data_fpe_ff3.ipynb

Spark, Python, ff3 can be run on other cloud platforms, too and also on prem. However, you need to think how to secure solution (e.g. prevent data exfiltration, networking, authentication/authorization), my blog elaborates how to do that in Synapse. Hope this helps.