AWS FIS
AWS Fault Injection Simulator (FIS) runs controlled chaos engineering experiments on your AWS infrastructure. Intentionally break things to prove your system can handle real failures. Think of it like a fire drill for your cloud — you simulate server crashes, network failures, and AZ outages to verify your system actually recovers.
What is FIS? (Simple Explanation)
FIS is an AWS service in the Management category. AWS Fault Injection Simulator (FIS) runs controlled chaos engineering experiments on your AWS infrastructure.
When Would You Use FIS?
- Chaos engineering and resilience testing
- Disaster recovery validation
- Microservice failure injection
- Game day and incident response practice
- Compliance resilience evidence collection
Who Uses FIS?
From startups to enterprises, FIS powers:
What Makes FIS Powerful
FIS Pricing & Free Tier
CloudWatch Free Tier: 10 metrics, 5GB log ingestion. Config: $0.003 per configuration item. CloudFormation: free (pay for created resources).
FIS Best Practices
- 1Create a multi-account strategy with AWS Organizations from day one
- 2Enable consolidated billing and apply SCPs to restrict risky actions
- 3Use Infrastructure as Code (CloudFormation/Terraform) for all production resources
- 4Set budget alerts at 50%, 80%, and 100% of expected monthly spend
- 5Enable AWS Config with conformance packs for continuous compliance monitoring
Getting Started with FIS in 5 Minutes
- 1Open the AWS Console and navigate to FIS
- 2Click "Create" or "Get started" to begin configuration
- 3Configure the required settings — name, region, and access permissions
- 4Review and create — monitor the initial status in CloudWatch
FIS CLI Quick Reference
2 production-ready commands. Full CLI Library (225+ services) →
aws fis helpView all FIS CLI v2 commands and subcommandsaws fis describe-fis --helpView options for describing FIS resourcesPros & Cons of FIS
Pros
- Pre-built experiment templates: EC2 stop, AZ disruption, CPU stress
- Safety guardrails — blast radius controls and automatic rollback
- CloudWatch integration for experiment monitoring and stop conditions
- Target-based selection by tags, ASGs, or instance IDs
- Experiment history and compliance reports
Cons
- ✕Vendor lock-in — migrating away from AWS requires significant effort
- ✕Costs can be unpredictable without proper monitoring and budgeting
- ✕Learning curve for beginners — AWS has 200+ services with complex IAM policies
FIS vs Alternatives
FIS vs CloudWatch
Choose FIS for Chaos engineering and resilience testing and Disaster recovery validation. It excels at pre-built experiment templates: ec2 stop, az disruption, cpu stress.
Choose CloudWatch as an alternative when your requirements differ. Each service in the Management category serves different architectural patterns.
Services That Work with FIS
FIS is rarely used alone. It is typically combined with:
Compliance & Security
How AWS FIS fits into major compliance standards. Browse all 41 frameworks →
FIS configuration is audited by CIS Benchmarks v1.5–v3.0 for secure cloud defaults.
NIST 800-53FIS access controls, encryption, and audit logging map to NIST 800-53 AC, SC, and AU control families.
PCI DSS 4.0FIS encryption, access control, and logging support PCI DSS for cardholder data environments.
SOC 2FIS security, availability, and confidentiality controls evaluated under SOC 2 Trust Services Criteria.
ISO 27001FIS configuration and monitoring controls map to ISO 27001 Annex A information security management.
Frequently Asked Questions About FIS
What is AWS FIS?
AWS Fault Injection Simulator (FIS) runs controlled chaos engineering experiments on your AWS infrastructure. Intentionally break things to prove your system can handle real failures. Think of it like a fire drill for your cloud — you simulate server crashes, network failures, and AZ outages to verify your system actually recovers.
What is FIS used for?
FIS is commonly used for: Chaos engineering and resilience testing; Disaster recovery validation; Microservice failure injection; Game day and incident response practice; Compliance resilience evidence collection. It's a core service in the management category of AWS.
Is FIS free?
CloudWatch Free Tier: 10 metrics, 5GB log ingestion. Config: $0.003 per configuration item. CloudFormation: free (pay for created resources).
What are the key features of FIS?
FIS's most important capabilities include: Pre-built experiment templates: EC2 stop, AZ disruption, CPU stress. Safety guardrails — blast radius controls and automatic rollback. CloudWatch integration for experiment monitoring and stop conditions. Target-based selection by tags, ASGs, or instance IDs. Experiment history and compliance reports. Each of these is designed to help teams chaos engineering and resilience testing.
How does FIS compare to alternatives?
FIS competes with both AWS-native alternatives (CloudWatch, EC2, ECS) and third-party equivalents. The right choice depends on your specific requirements for scalability, cost, and operational overhead. See the comparisons section below for detailed guidance.
Which compliance frameworks apply to FIS?
CIS AWS v3.0: FIS configuration is audited by CIS Benchmarks v1.5–v3.0 for secure cloud defaults. NIST 800-53: FIS access controls, encryption, and audit logging map to NIST 800-53 AC, SC, and AU control families. PCI DSS 4.0: FIS encryption, access control, and logging support PCI DSS for cardholder data environments. SOC 2: FIS security, availability, and confidentiality controls evaluated under SOC 2 Trust Services Criteria. ISO 27001: FIS configuration and monitoring controls map to ISO 27001 Annex A information security management.
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