This article contains a simple presentation of the Senzing Architecture. The key point to understand is that Senzing is a simple-to-use API that is provided as a native Library with Java (JNI) and Python wrappers that you embed into your applications/services, and run on your systems. No data flows to Senzing and no Senzing personnel access your systems. You can run air-gapped as many/most of our customers do.
Attached to this article is a more detailed/technical presentation to underscore the simplicity of the Senzing API.