What should occur first in the SAML authentication sequence using Zscaler?

In the SAML authentication sequence, the first step involves the initiation of a request for an application. This is where the process begins as the user attempts to access a specific resource or application. The SAML request triggers the need for authentication, prompting the subsequent steps in the SAML workflow.

When a user requests access to an application that is protected by SAML, the system recognizes this request and prepares to manage the authentication process. This leads to a redirection to the Identity Provider (IdP) for authentication (which comes afterward), where the user will be prompted to enter their credentials.

The SAML authentication process is designed to ensure that the user is authenticated by the IdP before access to the application is granted, thus emphasizing the importance of this initial request within the sequence. The subsequent steps, such as the login request and the issuance of the SAML auth token, rely on this initial request being made.