Cloudflare demonstrates superior resilience against HTTP/3 connection exhaustion attacks compared to Fastly, a vulnerability highlighted by researchers from multiple universities who tested major Content Delivery Networks. While five of six tested CDNs saw origin connections exceed 300 during these attacks, Cloudflare remained the exception due to its ability to buffer complete requests before establishing origin connections. This technical advantage positions Cloudflare as a more robust infrastructure choice for developers managing high-traffic environments. The competitive landscape for edge computing shifted significantly in early 2026 following Anthropic's launch of Claude Managed Agents, which introduced new architectural requirements for AI workloads. Fastly experienced an 18 percent stock drop on April 10, 2026, while Cloudflare fell 11 percent on April 9, reflecting market adjustments to the new AI infrastructure paradigm. Despite these short-term declines, Cloudflare maintains a stronger developer ecosystem with model-agnostic tools and transparent pricing structures that contrast sharply with Fastly's opaque fees and enterprise-focused instability. Cloudflare continues to project robust growth with estimates between 28 to 29 percent for 2026, driven by its flexible pay-as-you-go models and extensive feature set available across all plans. Unlike Fastly, which often imposes high minimum fees and targets large enterprise clients like the UK government, Cloudflare offers a clear path for small-scale developers through its Workers Paid plan with a $5 monthly minimum. The company's ability to run inference across various models including Llama and Mistral further enhances its appeal against competitors restricted to specific proprietary models.