Array ASF Series Web Application Firewall vs AWS WAF: Side-by-Side Comparison (2026)

Mid-market and enterprise teams defending legacy and cloud applications simultaneously will get the most from Array ASF Series; its multiple deployment modes (bridge, routing, TAP) let you protect workloads across VMware, Hyper-V, and AWS without ripping out your infrastructure. The auto-learning algorithms and behavioral bot detection catch attacks that signature-based WAFs miss, and SSL offloading removes a real performance tax on busy application teams. Skip this if you're a startup looking for a lightweight cloud-native WAF or need deep API schema validation; Array prioritizes layer 7 attack prevention over API-specific threat modeling. Teams protecting APIs and web applications already running on AWS infrastructure will get the most from AWS WAF because it integrates natively with CloudFront, ALB, and API Gateway without extra agents or out-of-band traffic. The free tier covers core attack patterns,SQL injection, XSS, bot control,and you only pay for requests above 5 million monthly, making it cost-effective for variable traffic loads. Skip this if you need centralized policy management across multi-cloud deployments or real-time threat intelligence feeds; AWS WAF's rule sets are competent but require manual tuning, and visibility across non-AWS resources stays limited.

Based on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion: