@Irshaad_Laher_WS I have not used this rule personally but Service Standard rule needs to be deployed once (It will require expert services to deploy the rule) and does not require multiple deployment unlike before provisioning rule (as the business logics are applied on the source level).
Please refer below resolved post:
Services Standard Before Provisioning Rule - Identity Security Cloud (ISC) / ISC Discussion and Questions - SailPoint Developer Community
You will find the use cases that can be achieved in the mock project.
Lets see the responses from other experts.
Regards,
Shekhar Das