Zscaler provides cloud-based cybersecurity services that route and inspect internet and application traffic for businesses, protecting employees and corporate data as more work happens outside traditional company networks and office environments. Its cloud security platform reflects a broader shift in enterprise cybersecurity away from traditional network perimeter security, like firewalls protecting a physical office network, toward securing individual users and devices wherever they happen to be working. This zero trust security approach, which verifies every user and device attempting to access company resources rather than assuming anything inside a traditional network perimeter is safe, has grown in importance as remote and hybrid work arrangements became more common. Zscaler's revenue is subscription-based, tied to the number of users and the scope of security services that customer organizations purchase, giving it a recurring revenue model common among cloud-delivered enterprise software and security companies.