Zscaler vs Microsoft Sentinel
Side-by-side comparison of AI visibility scores, market position, and capabilities
San Jose zero trust security (NASDAQ: ZS) surpassing $3B ARR FY2025; 500B+ daily transactions across 160+ data centers for 8,650+ enterprises and 35% Forbes Global 2000 competing with Palo Alto Prisma for enterprise zero trust.
About
Zscaler is a San Jose, California-based cloud security company — publicly traded on NASDAQ (NASDAQ: ZS) at approximately $30 billion market capitalization — operating the world's largest security cloud, the Zscaler Zero Trust Exchange, that processes 500+ billion daily transactions across 160+ data centers globally. In fiscal year 2025 (ended July 31, 2025), Zscaler surpassed $3 billion in annual recurring revenue (ARR) with Q4 FY2025 revenue of $719.2 million (21% year-over-year growth), serving 8,650+ enterprise customers including 35% of the Forbes Global 2000. The platform's flagship products — Zscaler Internet Access (ZIA, secure web gateway), Zscaler Private Access (ZPA, zero trust network access), and Zscaler Digital Experience (ZDX, application performance monitoring) — have eliminated traditional VPN and network perimeter architectures for thousands of enterprises. Founded in 2007 by CEO Jay Chaudhry (serial security entrepreneur who built and sold four prior security companies); IPO March 2018.
Microsoft's cloud-native SIEM/SOAR platform with AI-powered threat detection and Copilot integration; part of Microsoft's $20B+ security business competing with Splunk/Cisco and IBM QRadar.
About
Microsoft Sentinel is a cloud-native SIEM (Security Information and Event Management) and SOAR (Security Orchestration, Automation, and Response) platform built on Azure — providing enterprise security operations centers (SOCs) with scalable log ingestion, AI-powered threat detection, incident investigation, and automated response playbooks that can process petabytes of security data across hybrid and multi-cloud environments. Part of Microsoft's Security product portfolio (which generates $20+ billion in annual revenue), Sentinel is natively integrated with Microsoft 365 Defender, Entra ID, Azure Defender, and 200+ third-party data connectors.
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