Which feature is NOT recommended for securing outbound requests?

Enhanced External Services is not typically recommended for securing outbound requests because it is designed primarily for integrating with external services and does not inherently provide the level of security that other features do. The focus of this feature is on enabling the use of external APIs by allowing declarative calls to those APIs, rather than on securing those outbound connections.

In contrast, Salesforce Connect is designed for secure data integration and supports external data through secure connections. Private Connect provides a private and secure way to connect Salesforce with external systems. Shield Platform Encryption adds an essential layer of security by encrypting data at rest, thus ensuring that sensitive information is kept secure, including during outbound requests. These features are better suited for ensuring secure outbound communications compared to Enhanced External Services, which lacks the same robust security focus when it comes to securing outbound requests.