AWS Shield is best understood as two completely different products sharing a name. Shield Standard is an unambiguous 5-out-of-5: automatically enabled at no charge for every AWS account, it provides always-on Layer 3 and Layer 4 DDoS protection for EC2, CloudFront, Route 53, and ELB resources with zero configuration required. For the overwhelming majority of AWS workloads — small to medium applications, startups, development environments — Shield Standard provides meaningful baseline protection at literally zero cost. Nothing else in this comparison matches that value.
Shield Advanced is a different proposition entirely. At $3,000/month with a mandatory one-year commitment, it is squarely an enterprise product. What it delivers at that price is genuinely substantial: Layer 7 DDoS mitigation via tight AWS WAF integration, automatic application-layer attack response, health-based detection via Route 53, proactive engagement from the Shield Response Team when your application goes unhealthy, DDoS Cost Protection that credits back AWS scaling charges caused by attack traffic, and coverage for all accounts within an AWS Organization under a single monthly fee. For organizations running mission-critical workloads in financial services, government, gaming, or e-commerce — where sustained DDoS attacks translate directly into revenue loss — the ROI calculation often justifies the cost.
The friction points are real. Access to the SRT requires a separate Business or Enterprise AWS Support subscription, adding $100–$15,000+/month on top of the $3,000 Advanced fee. The product is entirely AWS-native — it cannot protect infrastructure hosted elsewhere. And the 1-year commitment with no trial makes evaluation difficult for procurement teams operating under budget constraints.
Best for: large AWS-native organizations running internet-facing production workloads where downtime has direct revenue impact — financial services, gaming, media, ecommerce. Shield Standard as baseline for everyone on AWS.
Not ideal for: multi-cloud or hybrid infrastructure, SMBs, or teams not willing to commit to a 12-month contract without trial.