What is the most likely reason a CyberArk Identity admin would turn on the "Provisioning"...

The “Provisioning” feature within a Web App connector in CyberArk Identity is used to automate the process of on-boarding and off-boarding users in third-party applications. When this feature is enabled, it allows for the automatic creation, update, and deletion of user accounts in the connected application, based on the user’s status in CyberArk Identity. This ensures that access rights are granted and revoked in a timely manner, which is crucial for maintaining security and compliance within an organization.

References: The role of the provisioning feature in automating user account management can be found in the CyberArk documentation related to the CyberArk Provisioning Connector1.