Is AWS Shield Standard enough?

For many workloads, yes. Shield Standard automatically protects against common SYN floods, UDP reflection, and other Layer 3/4 attacks at no cost. Upgrade to Advanced if you need: Layer 7 protection, 24/7 DRT access, cost protection during attacks, or advanced metrics.

Why does Shield Advanced cost $3,000/month?

Shield Advanced provides: 24/7 access to the DDoS Response Team, proactive engagement for detected events, advanced real-time metrics, cost protection (credits for DDoS-related scaling), and WAF credits. The fee covers your entire AWS Organization, not just one account.

Does Cloudflare stop DDoS attacks for free?

Yes. Cloudflare's free plan includes unlimited Layer 3/4 DDoS mitigation with no traffic caps. Layer 7 protection (rate limiting, bot management) is included in paid plans starting at $20/month. Cloudflare has mitigated some of the largest DDoS attacks on record.

What is the cost of a DDoS attack?

The Ponemon Institute estimates the average DDoS attack costs $40,000/hour in lost revenue and productivity. For e-commerce sites during peak hours, the cost can exceed $100,000/hour. Factor in reputation damage and the $3,000/month for protection may be a bargain.

What is cost protection in Shield Advanced?

During a DDoS attack, your infrastructure scales to absorb the traffic, increasing your AWS bill. Shield Advanced cost protection credits your account for the excess charges caused by the attack, covering EC2, ALB, CloudFront, Route 53, and WAF scaling costs.

Do I need both WAF and DDoS protection?

They complement each other. DDoS protection handles volumetric Layer 3/4 attacks (network floods). WAF handles Layer 7 attacks (HTTP floods, slowloris, application exploits). For comprehensive security, use both. Shield Advanced includes WAF at no additional rule cost.

DDoS Protection Cost Calculator

Estimate DDoS protection costs for AWS Shield Advanced, Cloudflare, or Azure DDoS Protection. Calculate subscription and data transfer surcharges.

Common Scenarios

Protection Tier

Attack Risk Profile

Protected Resources

Expected Attacks/Year

Peak Attack Volume

Gbps

Hourly Revenue at Risk

$/hr

WAF Rules

Dedicated IPs

Monthly Protection

$3,385.00

base + 10 resources + WAF + IPs

Monthly Surge Est.

$112.50

amortized attack surcharges

Annual Protection Cost

$41,970.00

protection + attack surcharges

Avoided Loss / Year

$210,000.00

vs. 7.2 hrs unprotected downtime

Protection ROI

400.4%

protection pays for itself

Cost per Attack

$225.00

22,500 GB mitigated

Downtime Protected

0.2 hrs

vs. 7.2 hrs unprotected per attack

Annual Unprotected Loss

$216,000.00

6 attacks × $5,000.00/hr

Cost Composition

Base 89%

IPs

Protection Tier Comparison

Tier	Base/mo	Per Resource	WAF Included	SLA Credit
basic	$0.00	$0.00	No	0.00%
standard	$3,000.00	$30.00	No	0.10%
advanced	$5,000.00	$50.00	Yes	0.25%
enterprise	$12,000.00	$100.00	Yes	1.00%

Monthly Cost Breakdown

Item	Monthly	Annual
Base Subscription	$3,000.00	$36,000.00
Resource Protection (10 resources)	$300.00	$3,600.00
WAF Rules (50 rules)	$55.00	$660.00
Dedicated IPs (2 IPs)	$30.00	$360.00
Attack Surcharges (est.)	$112.50	$1,350.00
Total	$3,497.50	$41,970.00

Planning notes, formulas, and examples

About the DDoS Protection Cost Calculator

DDoS (Distributed Denial of Service) attacks can overwhelm your infrastructure, causing outages that cost thousands per hour in lost revenue and reputation. Cloud DDoS protection services absorb attack traffic before it reaches your servers, but the premium services carry significant costs.

AWS Shield Standard is free and protects against common Layer 3/4 attacks. Shield Advanced costs $3,000/month with a one-year commitment and adds DDoS Response Team (DRT) support, advanced metrics, cost protection, and Layer 7 mitigation. Cloudflare includes DDoS protection in all plans (free tier included). Azure DDoS Protection Standard costs $2,944/month.

This calculator helps you estimate the total cost of DDoS protection including subscription fees and any data transfer surcharges during attacks. Use it to decide whether premium DDoS protection is justified for your risk profile.

When This Page Helps

DDoS protection is expensive but can be critical for high-value applications. A major DDoS attack can cost $10,000–$100,000+ in downtime. This calculator helps you compare the cost of protection against the potential cost of unmitigated attacks to make an informed risk-based decision.

How to Use the Inputs

Enter the monthly subscription cost for your DDoS protection tier.
Set the number of protected resources (elastic IPs, ALBs, CloudFront distributions).
Enter the per-resource surcharge if applicable.
Enter any expected monthly data transfer surcharge during attacks.
Review the total monthly and annual protection cost.

Formula used

Subscription = base_monthly_fee
Resource Cost = protected_resources × per_resource_fee
Transfer Surcharge = attack_transfer_GB × surcharge_rate
Total Monthly = Subscription + Resource Cost + Transfer Surcharge

Example Calculation

Result: $3,000.00/month

AWS Shield Advanced at $3,000/month flat fee. With Shield Advanced, there are no per-resource charges for the first 100 resources, and AWS absorbs the cost of scaling during DDoS attacks (cost protection). This gives you 24/7 DDoS Response Team access and WAF credits.

Tips & Best Practices

AWS Shield Standard is free and sufficient for many workloads; evaluate before paying for Advanced.
Shield Advanced includes cost protection: AWS credits your bill for scaling during DDoS attacks.
Cloudflare offers unlimited DDoS protection even on the free plan for Layer 3/4 attacks.
The $3,000/mo Shield Advanced fee covers your entire AWS organization (all accounts).
Combine Shield Advanced with WAF for comprehensive Layer 3–7 protection.
Document your DDoS response plan; Shield Advanced includes access to the DDoS Response Team (DRT).

DDoS Protection Tier Comparison

AWS Shield Standard: free, automatic Layer 3/4 protection. AWS Shield Advanced: $3,000/mo, adds DRT access, Layer 7, cost protection, advanced metrics. Cloudflare: free unlimited L3/4; Pro $20/mo for basic L7; Business $200/mo for advanced WAF+DDoS. Azure DDoS Standard: $2,944/mo for 100 resources. GCP Cloud Armor: $5/policy + $1/rule + $0.75/M requests.

When to Invest in Premium DDoS Protection

Consider Shield Advanced or equivalent if: your application generates over $100K/month in revenue, you are in a frequently targeted industry (gaming, finance, e-commerce), you need compliance certifications requiring DDoS protection, or you have experienced attacks in the past. For smaller applications, Cloudflare's free tier provides excellent protection.

DDoS Response Planning

Regardless of protection level, have a documented response plan: escalation contacts, Shield Advanced DRT engagement procedures, traffic baseline documentation, and communication templates for customers. Conduct tabletop exercises quarterly to ensure the team can respond effectively under pressure.

Sources & Methodology

Last updated: February 8, 2026

Frequently Asked Questions

For many workloads, yes. Shield Standard automatically protects against common SYN floods, UDP reflection, and other Layer 3/4 attacks at no cost. Upgrade to Advanced if you need: Layer 7 protection, 24/7 DRT access, cost protection during attacks, or advanced metrics.