Identity & Access Security: Microsoft Active Directory and Entra ID, Okta, Cisco Duo, MFA, passwordless authentication, Conditional Access, SAML, OAuth/OIDC, PKI, PAM, IGA, ITDR/ISPM, Non-Human Identity, Cisco ISE/NAC, and Zero Trust identity architectures. Endpoint & Security Operations: Microsoft Defender XDR/Endpoint, CrowdStrike, Palo Alto Cortex, SIEM, SOAR, EDR/XDR, threat detection, vulnerability management, incident investigation, threat hunting, security analytics, and security automation.