Overview of the SSO flow
The following figure illustrates an example SSO process flow.

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A user initiates the sign-on process by requesting access to a protected resource.
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If PingFederate detects that the ForgeRock Intelligent Access cookie is not present, it redirects to a configurable Intelligent Access journey to orchestrate authentication. It also appends a PingFederate URL as a request parameter to resume the flow post-login.
If a session cookie is present, the ForgeRock solution checks the session cookie against ForgeRock Intelligent Access to ensure its validity.