The 2025 Cloudflare Radar Year in Review: The rise of AI, post-quantum, and record-breaking DDoS attacks

Summary

The 2025 Cloudflare Radar Year in Review highlights significant trends in internet traffic, AI adoption, and security challenges, including record-breaking DDoS attacks. The report reveals a 19% growth in global internet traffic, with notable increases in AI-related metrics and the prevalence of post-quantum encryption. The analysis is based on Cloudflare's extensive network data, providing insights into user behavior, connectivity issues, and the evolving landscape of internet services. Key findings include the dominance of Googlebot in web traffic and the rise of new generative AI services, reflecting the dynamic nature of the internet ecosystem.

Key Learnings

• 1Global internet traffic saw a 19% increase in 2025, driven by various factors including AI adoption and connectivity improvements.
• 2Googlebot accounted for a significant share of web traffic, emphasizing the importance of search indexing and AI training in web operations.
• 3DDoS attack sizes reached new heights, highlighting the need for robust security measures in cloud services.
• 4AI crawlers and their impact on web traffic patterns indicate a shift in how content is indexed and accessed online.
• 5The report underscores the importance of understanding regional internet outages and their effects on global traffic trends.

Who Should Read This

Cloud Architects at mid to senior levels seeking to understand the implications of AI and security trends on cloud service performance.

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