Imperva Web Application Firewall vs Fastly Next-Gen WAF

Imperva Web Application Firewall9.1Visit Fastly Next-Gen WAF8.7Visit

Higher score Imperva Web Application Firewall #3 in Web Security Software 9.1/10 Pricing on request ✓ 0 of 4 features Contact Thales

vs

Fastly Next-Gen WAF #7 in Web Security Software 8.7/10 Pricing on request ✓ 0 of 4 features Visit Fastly

• Imperva Web Application Firewall fits best

  Enterprises needing managed WAF policies and automation

• Fastly Next-Gen WAF fits best

  Mid-market and enterprise teams with distributed apps

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Side by side

Feature	Imperva Web Application Firewall 9.1/10 Visit ↗	Fastly Next-Gen WAF 8.7/10 Visit ↗
At a glance
Editor score	9.1	8.7
Ranking	#3 in Web Security Software	#7 in Web Security Software
Best for	Enterprises needing managed WAF policies and automation	Mid-market and enterprise teams with distributed apps
Pricing model	Paid	Paid
Starting price	Pricing on request	—
Free plan	—	—
Free trial	—	—
Deployment	Cloud, Self-hosted	Cloud, Self-hosted
Platforms	Web	Web, Linux
Support	Tickets, Docs	Docs
Built for	Mid-market, Enterprise	Mid-market, Enterprise
Features Imperva Web Application Firewall 0/4 · Fastly Next-Gen WAF 0/4
Phishing/malware blocking	Not checked yet	Not checked yet
Web app firewall	Not checked yet	Not checked yet
DDoS protection	Not checked yet	Not checked yet
Bot protection	Not checked yet	Not checked yet
Specs
Deployment	Not checked yet	Not checked yet
Websites covered	Not checked yet	Not checked yet
Our review
Pros	Managed rules update daily, with real-time updates for critical threats Combines web/API protection, bot controls, and behavior-based rate thresholds Automates policy creation and rule propagation, with Terraform deployment	Deploy at the edge, in the cloud, or through an agent Use contextual detection, attack signals, and CVE virtual patches Apply API, bot, and advanced rate-limiting rules
Cons	No public WAF plan prices; buying requires contacting sales No free plan, though a Cloud WAF trial is advertised Multiple deployment variants may require choosing among different operating models	Pricing requires contacting sales Support channels listed are limited to documentation Retention varies by account entitlement and is capped at 30 days
Our verdict	Imperva Web Application Firewall protects web applications and APIs against application-layer attacks, including SQL injection, cross-site scripting, and other OWASP Top 10 threats. Thales offers it to mid-market and enterprise… Read the review →	Fastly Next-Gen WAF protects web applications, APIs, and microservices from malicious and anomalous traffic. It is aimed at application security and DevOps teams, particularly at mid-market and enterprise organizations that need protection… Read the review →

Strengths and trade-offs

• Imperva Web Application Firewall — where it wins

  • Managed rules update daily, with real-time updates for critical threats
  • Combines web/API protection, bot controls, and behavior-based rate thresholds
  • Automates policy creation and rule propagation, with Terraform deployment

  Where it doesn't

  • No public WAF plan prices; buying requires contacting sales
  • No free plan, though a Cloud WAF trial is advertised
  • Multiple deployment variants may require choosing among different operating models

• Fastly Next-Gen WAF — where it wins

  • Deploy at the edge, in the cloud, or through an agent
  • Use contextual detection, attack signals, and CVE virtual patches
  • Apply API, bot, and advanced rate-limiting rules

  Where it doesn't

  • Pricing requires contacting sales
  • Support channels listed are limited to documentation
  • Retention varies by account entitlement and is capped at 30 days

• Imperva Web Application Firewall9.1/10 · Pricing on request

  Managed WAF rules, bot controls and deployment automation for hybrid environments.

  Contact ThalesFull verdict →
• Fastly Next-Gen WAF8.7/10 · Pricing on request

  Flexible deployment and CVE virtual patches, with pricing available through sales.

  Visit FastlyFull verdict →