AWS Certificate Manager vs crt.guru: Side-by-Side Comparison (2026)
Features, pricing, ratings, and pros & cons — compared head-to-head.
AWS Certificate Manager is a free certificate lifecycle management tool. crt.guru is a commercial certificate lifecycle management tool by crt.guru. Compare features, ratings, integrations, and community reviews side by side to find the best certificate lifecycle management fit for your security stack.
CST VerdictBased on our analysis of NIST CSF 2.0 coverage, core features, integrations, company size fit, here is our conclusion:
Teams running most or all of their infrastructure on AWS should use AWS Certificate Manager because it eliminates certificate procurement friction and automates renewal for resources already locked into the ecosystem, with zero per-certificate cost. ACM integrates natively with CloudFront, ALB, NLB, and API Gateway, meaning certificates provision in minutes and renew automatically without manual intervention or tooling. Skip this if your architecture spans multiple cloud providers or on-premises infrastructure heavily; you'll end up managing certificates across three different systems anyway, and a third-party platform will serve you better than jumping between vendor consoles.
Security teams managing external-facing services across multiple regions need crt.guru for its multi-protocol scanning and Certificate Transparency monitoring, which catches unauthorized cert issuance before your domain gets impersonated. The tool covers ID.AM and DE.CM effectively by mapping your cert portfolio across Frankfurt, New York, and Amsterdam simultaneously, then alerting at granular intervals (30, 14, 7, 1 day) so you're not racing against expiry deadlines. Skip this if your organization has zero external TLS endpoints or relies on a managed WAF vendor that already owns cert lifecycle; crt.guru solves a specific problem rather than replacing internal PKI tooling.
