Hi @Anonymous ,
Thanks for reaching out.
If both of your applications are in one B2C tenant, then the best way to move between two applications without login is to configure Single Sign On.
You can control SSO behavior by using the below settings in Azure AD B2C:
If you are using User Flow, go to properties of the user flow and set below settings to either Tenant or Policy. If you set it to policy, SSO experience between both the applications will be provided when both applications are authenticated via same user flow.
If you are using a custom policy, you can set the above setting by configuring the SingleSignOn Scope to either Tenant or Policy in the RP file (signup/sign-in file).
<RelyingParty>
<DefaultUserJourney ReferenceId="SignUpOrSignIn" />
<UserJourneyBehaviors>
<SingleSignOn Scope="Tenant" KeepAliveInDays="30" />
<SessionExpiryType>Absolute</SessionExpiryType>
<SessionExpiryInSeconds>1200</SessionExpiryInSeconds>
</UserJourneyBehaviors>
Hope this will help.
Thanks,
Shweta
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