Zscaler vs Expel
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.
Expel is a Forrester Wave Leader in MDR with 5/5 scores across 15 criteria, providing 24/7 AI-powered threat detection and response across cloud, endpoint, identity, and network.
About
Expel is a Herndon, Virginia-based managed detection and response (MDR) company founded in 2016 that provides 24/7 security monitoring, threat detection, and incident response as a managed service. Rather than replacing a customer's existing security tools, Expel integrates with the tools organizations already have — SIEMs, EDRs, cloud platforms, and identity providers — and applies AI-powered automation and expert human analysis to triage alerts and respond to threats around the clock.
AI Visibility Head-to-Head
Key Details
Capabilities & Ecosystem
Also Compare
Track AI Visibility in Real Time
Monitor how your brand performs across ChatGPT, Gemini, Perplexity, Claude, and Grok daily.