Expected Salesforce Certified Platform Identity and Access Management Architect (Plat-Arch-203) Exam Topics, as suggested by Salesforce :

• Module 1: Identity Management Concepts: This topic covers common authentication patterns, building blocks of identity solutions (authentication, authorization, accountability), and establishing trust between systems. It also includes methods for provisioning users in Salesforce and troubleshooting common points of failure in SSO solutions.
• Module 2: Accepting Third-Party Identity in Salesforce: It discusses cases where Salesforce acts as a Service Provider (SP), methods for provisioning users from identity stores (B2E, B2C), appropriate authentication mechanisms for accepting third-party identities, and ways to provision users to enable SSO while applying access rights. Moreover, the topic also addresses auditing, monitoring approaches, and tools to diagnose IdP issues.
• Module 3: Salesforce as an Identity Provider: In this topic, you’ll find information on OAuth flows, configuring Connected Apps for authorization, and implementation concepts of OAuth. It also recommends Salesforce technologies to provide identity to third-party systems.
• Module 4: Access Management Best Practices: This topic covers methods of multi-factor authentication (MFA), assigning roles, profiles, and permission sets during SSO, auditing and verifying activity post-login, and configuring settings for a Connected App.
• Module 5: Salesforce Identity: This topic explains the role of Identity Connect in Salesforce Identity implementations, the fit of Salesforce Customer 360 Identity in a comprehensive Customer 360 solution, and recommendations for Salesforce license types based on specific requirements.
• Module 6: Community (Partner and Customer): Here, you’ll find details on customizing user experiences in Experience Cloud, supporting external IdPs in communities, understanding External Identity solutions and associated licenses, and when to use embedded login based on different scenarios.