Which service, when failed, does not mandate a failover and is considered optional when working with a CyberArk High Availability Cluster?

The Event Notification Engine (ENE) is considered an optional service in a CyberArk High Availability Cluster, meaning that its failure does not necessitate an immediate failover to maintain system functionality. ENE is responsible for monitoring events and sending notifications, but it does not directly impact the core functionalities of CyberArk's privileged access security solutions. If ENE encounters issues or fails, the other components within the CyberArk environment can continue to operate normally, allowing for uninterrupted access and management of privileged accounts.

In contrast, the other services mentioned, such as the Central Policy Manager (CPM), Password Vault Web Access (PVWA), and Privileged Access Security Manager, play critical roles in ensuring that privileged accounts are securely managed and that policies are effectively enforced. The failure of these services can have significant implications for overall system performance and security, prompting the need for immediate failover actions to maintain proper operation and security of the environment.