Why Identity Authentication Services (IAS)? And Is there any documentation on IAS?

IAS centralizes the authentication process, and will allow you to authenticate users to different SAP cloud applications from one central tool.

If the customer is willing to configure trust with IAS and SAP Ariba, you can share this below link:

https://blogs.sap.com/2022/02/01/configuring-trust-with-ias-and-sap-ariba-step-by-step-instructions/

For more details on IAS integration, customer can work with Ariba Best Practice Center.

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