SAML in Zoho One vs Zoho Accounts

SAML in Zoho One vs Zoho Accounts

What is the difference between setting up SAML in Zoho Accounts:

https://help.zoho.com/portal/en/kb/accounts/manage-your-organization/saml/articles/configure-saml-in-zoho-accounts

... vs SAML in Zoho One?:

https://help.zoho.com/portal/en/kb/one/admin-guide/custom-authentication/setting-up-custom-authentication-with-popular-idps/articles/zohoone-customauthentication-azure

We are a Zoho One customer.

I am familiar with SAML etc. but wonder what are the particular differences between the approaches Zoho Accounts vs Zoho One.

Also in Zoho One, there is the recent Security 2.0 - does it make any difference for SAML?