Edge computing promised sub-50ms latency by running code closer to users. In 2026, we have real data on what works and what doesn't.

Edge Platforms Matured in 2026:

  • Cloudflare Workers: Largest edge network (310+ cities), Workers AI, D1, R2
  • Fastly Compute@Edge: Better for video/media, strong in North America
  • Fly.io: Global app platform with VMs at edge, developer-friendly
  • Deno Deploy: Modern edge runtime, TypeScript native
  • Vercel Edge Functions / Netlify Edge: For frontend-focused teams
  • AWS Lambda@Edge / CloudFront Functions: For existing AWS shops

Real-World Success Stories:

  • E-commerce: Edge personalization, A/B testing without origin hits
  • Gaming: Leaderboards, matchmaking, real-time stats
  • Travel: Search autocomplete, pricing cache, availability checks
  • Authentication: JWT validation, bot detection at edge

Limitations in 2026:

  • No true distributed databases (D1, Turso, Fauna are improving)
  • Cold start still exists (though