Optional Products {#wc-opt-prerequisites}
=========================================

These products are optional, but need to be enabled and configured for your merchant ID if you choose to use them:

* Payer Authentication for 3-D Secure
* Tokenization
* Apple Pay
* Google Pay
* Click to Pay
* Paze
* `Decision Manager`
* `Fraud Management Essentials`

You can also choose to enable Message-Level Encryption (MLE) for additional security. A REST certificate is required for MLE. See the [*Getting Started with the REST API*](https://developer.cybersource.com/docs/cybs/en-us/platform/developer/all/rest/rest-getting-started/restgs-http-message-intro/restgs-security-key-pair-intro/restgs-security-key-pair-task.md "") guide.