Zscaler is a public cloud security company founded in 2007 by Jay Chaudhry and K. Kailash. It operates a cloud-native zero trust security platform - the Zscaler Zero Trust Exchange - designed to secure users, devices, applications, and data regardless of location. The platform is built to replace traditional VPNs and firewalls, applying AI and machine learning to threat detection and data protection at scale.
The company claims to run the world's largest cloud security platform, spanning more than 160 data centres worldwide and processing billions of transactions daily. Its customer base includes 40% of the Fortune 500, as well as large banks, governments, and critical infrastructure providers. Zscaler is listed on a public exchange and is valued at over $30 billion.
Zscaler's technical stack spans cloud-native architecture, zero trust design, identity management, data protection, and AI-driven cybersecurity. The platform is built to unify these disciplines - replacing point solutions and network perimeter models with a single, centralised security layer that operates across distributed environments. Key domains include:
- Zero trust architecture and secure access
- AI and machine learning for threat detection
- Data protection and identity management
- Cloud-native security infrastructure
The company positions itself around the principle that effective security should be invisible to end users while remaining impenetrable to attackers. Its mission is to make the cloud a safer place for enterprises undergoing digital transformation.