IdP

Implementing conditional access usually requires the identity provider (IdP) to support claim extensions such as acr and amr in SAML/OIDC, and to be able to pass policy decision results to the application.

SCIM (System for Cross-domain Identity Management) is an open standard for automating the exchange of user identity information.

Cryptographic signing mechanisms can serve as a trust substitute for EMA because forging a valid signature is computationally infeasible, requiring an attacker to control the enterprise IdP itself.

In EMA scenarios, account linking should rely on signed assertions issued by the enterprise IdP rather than manual user confirmation—this is one resolution pattern.

A SAML assertion is an XML-format security token issued by an enterprise IdP and digitally signed using the IdP's private key.

The new SCIM logs page records every provisioning request sent by the IdP.

Because SCIM push is an asynchronous operation initiated by the IdP, administrators on the IdP side have almost no way to detect when the receiving end silently rejects requests or returns ambiguous errors.

SSO enables centralized management of account lifecycles, so that when an employee leaves, revoking their credentials on the IdP side is all that is needed to cut off their access to all associated applications.

The ID-JAG flow involves an application first obtaining an identity assertion from an identity provider, then using that assertion to exchange for an access token targeting a specific resource server, with enterprise authorization policies enforced during the exchange.

In the ID-JAG model, enterprise administrators pre-configure which applications can access which resources, under what conditions, and with what scope, and the identity provider issues tokens containing authorization assertions based on these pre-set policies.

In this layered design, the IdP is responsible for macro-level trust brokering while applications handle micro-level permission control, with applications retaining final authority over their own resources.

In Okta's Cross App Access architecture, the Identity Provider (IdP) plays the role of a broker, responsible for coordinating and establishing the chain of trust for connections.

Downstream applications must actively verify the validity of the grant, including checking whether it was issued by a trusted IdP, whether it targets the current application, whether it is within its validity period, and whether the access scope is consistent.

The IdP's responsibility boundary is to broker the connection and establish the initial trust relationship, but not to complete all security verification on behalf of downstream applications.

Token-based stateless identity verification requires all participating systems to trust the same identity provider (IdP) or a group of mutually trusted identity providers.