Authentication refers to the way users sign on. If Primavera Cloud is configured to use Oracle Identity Cloud Service (IDCS), administrators can—and should—implement Single Sign-On (SSO). SSO reduces the number of passwords users have to remember. It can also be used to enable multi-factor login, which is when users are asked to provide some verification in addition to their passwords, like a code that they receive via text or email.
If your Primavera Gateway Cloud environment is provisioned in Oracle Cloud Infrastructure (OCI), it comes with IDCS.
See Oracle Identity Cloud Service https://docs.oracle.com/en/cloud/paas/identity-cloud/index.html in the Oracle Help Center for more information.