This ebook explains why traditional network monitoring tools struggle to provide visibility in modern Zero Trust environments. As organizations adopt cloud applications, hybrid work, and secure digital transformation, users increasingly connect directly to SaaS, private applications, and cloud services rather than through centralized corporate networks. This shift reduces the attack surface but also limits the effectiveness of legacy monitoring tools that depend on network traffic and perimeter visibility. The guide examines common deployment scenarios, including direct-to-SaaS access and secure private application connectivity, and highlights the visibility gaps created by encrypted, cloud-native environments. It introduces Zscaler Digital Experience (ZDX) as an end-to-end monitoring solu

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