Is there other options for Remote Access besides SAML?

Is there other options for Remote Access besides SAML?

Hi, our application is currently configured based off this document as described in this document, Remote Authentication - Zoho Desk Knowledgebase, to SSO users from our application to zoho Help Center homepage.

Our application is not currently configured with SAML. Are there other options available for Remote Access besides SAML? If SAML, as described in this document Configure Help Center SAML - Zoho Desk Knowledgebase, is the direction we must go in, what the time line for our current configuration before it is depreciated?