Santhosh Sivarajan

Santhosh Sivarajan is a cybersecurity and identity practitioner, published author, longtime Microsoft MVP, technology evangelist, and technical community leader with extensive experience in enterprise security and Identity and Access Management (IAM).

His work spans identity strategy, directory architecture, security and maturity assessments, privileged access, hybrid and cloud identity, incident-focused identity analysis, and practical IAM program design. He combines deep technical expertise with business, governance, compliance, and risk perspectives to help organizations build secure, resilient, and sustainable identity programs.

Santhosh has contributed extensively to the global technical community through books, technical articles, speaking engagements, mentoring, user groups, workshops, and open technical tools. He is particularly passionate about helping practitioners, students, and emerging technology professionals develop practical skills in identity, cybersecurity, and enterprise technology.

He holds two master’s degrees from the University of Houston, Texas—one in Computer Science and the other in Business Administration. His writing reflects a practitioner-first approach, connecting technology with real-world architecture, governance, risk, and business outcomes.