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Modernizing with agile SASE: a Cloudflare One blog takeover (opens in new tab)

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The post argues that changing work patterns, AI agents, and Internet-based perimeters require organizations to move beyond fragmented legacy networks toward “agile SASE.” It presents Cloudflare One as a composable platform that combines networking and security on a global connectivity cloud, using single-pass processing to avoid service-chaining bottlenecks. Cloudflare positions this architecture as a faster path to modernization, beginning with focused use cases rather than a large-scale “big bang” migration.

The Case for Agile SASE

  • Hybrid work and AI-driven traffic are making traditional corporate perimeters and office-based networks obsolete.
  • Legacy firewalls, VPN concentrators, and hardware appliances create a “fragmentation penalty.”
  • Technical debt accumulates through:
    • Conflicting firewall rules
    • Manual patching
    • Aging hardware
    • Infrastructure unable to handle AI-scale traffic
  • First-generation SASE platforms often shifted fragmentation from physical hardware into isolated cloud and operational silos.
  • The resulting problem is not a shortage of security data, but difficulty enforcing consistent policies across a borderless enterprise.

Cloudflare One’s Single-Pass Architecture

  • Cloudflare describes zero trust as the security model and Cloudflare One as the platform for implementing it.
  • The platform converges networking and security through a global connectivity cloud spanning more than 300 cities.
  • Security checks can run simultaneously on every server rather than processing traffic sequentially through separate services.
  • This avoids service chaining, which can introduce latency and operational complexity.
  • Cloudflare frames the result as a programmable, composable platform rather than a collection of acquired or loosely connected tools.

Five Themes for Network Modernization

The company’s planned technical series focuses on:

  • A new network standard: Building a programmable, future-ready Internet foundation.
  • Identity beyond passwords: Combining human and device verification instead of relying only on credentials.
  • Signal over noise: Using AI to convert large volumes of security data into actionable guidance.
  • The autonomous edge: Improving performance and reducing friction as part of the security strategy.
  • A unified vision: Showing how enterprises and partners can standardize on Cloudflare One at scale.

Programmability and Developer Integration

  • Cloudflare One runs alongside Cloudflare Workers, allowing teams to write code that responds to security events in real time.
  • This extends policy enforcement beyond simple allow/block decisions.
  • Organizations can automate more sophisticated security and operational workflows.
  • Cloudflare argues that this flexibility helps technology teams support faster business growth while improving protection.

Practical Starting Points

The post recommends beginning with focused modernization projects:

  • Remote access: Replace maintenance-heavy VPNs with clientless access and faster zero trust adoption.
  • Email protection: Detect phishing, Business Email Compromise, and related multi-channel threats with AI-powered controls.
  • DNS filtering: Block malicious websites for hybrid workers using DNS protection based on the 1.1.1.1 resolver.
  • AI governance: Identify shadow AI usage and control how organizational data enters generative and agentic AI systems.
  • Branch networking: Treat offices and coffee-shop workspaces as remote sites, reducing dependence on dedicated hardware.

Organizations evaluating SASE should favor platforms that provide consistent policy enforcement, programmable controls, and incremental adoption. Cloudflare’s recommended entry point is to start with a specific need—such as VPN replacement or AI governance—and expand toward a unified connectivity and security architecture.