This is useful as it encrypts "data in transit". This is good for security in my backend. It is also sometimes required legally in the US (see § 6801(a)) and in Germany.
It is particularly useful when PAS and Prizm are on different servers and communicates over the network.
Some customers do not want to set up their own proxy to add SSL/HTTPS either because of lack of experience/resources or because there is still unencrypted calls from PAS or Prizm to the proxy.
The customers want this supported natively.
This is very similar to https://ideas.accusoft.com/ideas/PCC-I-217