Cloudflare is faster than Zscaler
Jan 9, 2023David Tuber, Alex Kuck

Summary
This post details performance comparisons between Cloudflare's Zero Trust products (Gateway, Access, Browser Isolation) and Zscaler's equivalents (ZIA, ZPA, Cloud Browser Isolation). It quantifies the performance differences using 95th percentile Time to First Byte and Response tests, highlighting Cloudflare's speed advantage. The analysis includes a deep dive into proxy latency, demonstrating that Cloudflare's proxy latency is significantly lower than Zscaler's, often falling within Zscaler's SLA for 90th percentile while Zscaler exceeds its 95th percentile SLA. The post also discusses the importance of performance for user experience and security effectiveness in Zero Trust solutions.
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