Organizational modeling is an important aspect of building authentication and authorization into applications, especially for enterprise sales. It involves handling users, teams, and the relationships between them within an organization. The complexity of organizational modeling increases when different types of relationships and Single Sign-On (SSO) are introduced. Users can be part of multiple organizations in a many-to-many relationship, with workspaces being a lower level concept that organizes users and artifacts inside an organization. Implementing organizational modeling involves creating tables for users and organizations or membership tables for many-to-many relationships. Challenges arise when dealing with SSO requirements from different organizations, as users may need to reauthenticate according to each organization's policies.