Zscaler Internet Access delivers a cloud next-generation firewall with inline IPS, full TLS 1.3 decryption and a cloud sandbox, meeting most advanced inspection requirements. The service does not bundle native SD-WAN functions or broad IoT visibility that characterize the most feature-rich firewalls. Functionality is therefore one step below the rubric’s highest tier.

Zscaler Internet Access is delivered only as a cloud SaaS subscription procured through marketplaces such as AWS, so customers cannot host it on physical, virtual, or container infrastructure. The service natively supports IPv6 and standard routing methods for traffic forwarding. REST APIs and published connectors stream data to SIEM and SOAR platforms, but advanced automations may still need light scripting.

Most reviewers say Zscaler Internet Access provides a clean cloud console where admins set policy and view traffic without CLI, though menus spread across multiple portals cause minor friction. New administrators typically need little ramp-up time and describe the interface as simple to use, while some complain that log searches and training material could be better. The overall experience is smoother than many network-security peers but stops short of best-in-class polish

Zscaler Internet Access provides 24×7 support with a 15-minute initial SLA for critical cases in its premium tiers. Continuous cloud delivery pushes over 175,000 security updates daily, but the absence of hardware RMA means assistance falls just short of the rubric’s top level