An Experience Cloud customer user associated with a B2B Commerce store can access the storefront through the credentials and login information provided as part of the welcome-email process. Salesforce also provides administrators with the Log in to Experience as User action from the external user ' s Contact record, which is particularly useful for validating storefront configuration and troubleshooting access. Salesforce documentation confirms that external Experience Cloud users are represented through contacts or person accounts and that the login-as action is available from the Contact record when appropriate permissions and site membership are configured. A Contact Address record contains address information rather than an authentication entry point, while the Account record itself does not provide the equivalent customer-user login action. Therefore, the Welcome Email and Contact are the two applicable locations.

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