Saml, Oauth2, access reviews, validation templates, claims issues, token problems, enterprise integration patterns, SSO misconfigurations, authentication flows, third-party SaaS ecosystems, lifecycle controls, auth failures, OIDC, identity governance, factory-grade runbooks, service principals, enterprise apps, Troubleshooting, app registrations, SC?300 alignment, conditional access, Microsoft identity security certifications, Entra ID, consent permissions, consent failures