AWS Trusted Advisor¶

What Is AWS Trusted Advisor?¶

AWS Trusted Advisor is an AWS best-practice recommendation service that analyzes AWS environments and provides guidance for:

security
cost optimization
fault tolerance
performance
service limits
operational excellence

Trusted Advisor continuously evaluates AWS accounts against AWS-recommended operational and security best practices.

Think of Trusted Advisor as:

An AWS operational and security best-practice advisory service.

Why It Matters for Security¶

AWS Trusted Advisor helps organizations identify:

security weaknesses
exposed resources
operational risks
under-protected infrastructure
governance gaps
availability risks

Security and operations teams use Trusted Advisor for:

operational reviews
governance assessments
account hygiene checks
proactive risk reduction
optimization analysis

Trusted Advisor is commonly used for:

identifying public S3 buckets
detecting unrestricted security groups
reviewing MFA usage
monitoring IAM best practices
reviewing resilience gaps

It is heavily used in:

enterprise governance
operational reviews
AWS hygiene assessments
security posture improvement
cost and resilience optimization

Trusted Advisor acts as:

The operational consultant of the AWS ecosystem.

Core Concepts¶

AWS best-practice recommendation platform
continuously evaluates AWS environments
provides operational and security guidance
identifies risks and optimization opportunities
supports multiple operational categories
dashboard-based advisory service
account-level governance visibility
proactive operational hygiene platform

Important Integrations¶

AWS Organizations¶

Supports:

centralized governance visibility
multi-account operational reviews
enterprise account hygiene assessments

AWS Security Hub¶

Can aggregate Trusted Advisor findings into centralized security dashboards.

Amazon EventBridge¶

Supports:

automated governance workflows
remediation orchestration
operational automation

based on Trusted Advisor findings.

AWS Systems Manager¶

Commonly used for:

remediation automation
operational corrections
patching workflows

triggered from Trusted Advisor recommendations.

AWS Lambda¶

Supports:

custom remediation logic
governance automation
operational workflows

AWS IAM¶

Trusted Advisor evaluates IAM security best practices such as:

MFA usage
root account security
password policy enforcement

Amazon CloudWatch¶

Can monitor operational metrics related to Trusted Advisor recommendations.

AWS Support Plans¶

Some Trusted Advisor checks require:

Business Support
Enterprise Support

Very important operational distinction.

Security Features¶

Security Best-Practice Checks¶

Trusted Advisor evaluates common security risks such as:

unrestricted security groups
public S3 buckets
missing MFA
exposed access keys
weak IAM configurations

Fault Tolerance Recommendations¶

Trusted Advisor identifies:

resilience gaps
insufficient redundancy
missing backups
availability risks

Cost Optimization Guidance¶

Trusted Advisor recommends:

rightsizing workloads
removing idle resources
reducing operational waste

Important operational governance capability.

Service Limits Monitoring¶

Trusted Advisor monitors:

AWS service quotas
approaching operational limits
scalability risks

Important for operational continuity.

Operational Excellence Checks¶

Trusted Advisor supports operational governance across:

account hygiene
security posture
resilience
operational health

Continuous Recommendations¶

Trusted Advisor continuously reevaluates AWS environments for:

operational improvements
governance recommendations
risk reduction opportunities

Automated Governance Integration¶

Trusted Advisor findings commonly integrate with:

EventBridge
Lambda
Systems Manager

for automated governance workflows.

Enterprise Governance Visibility¶

Organizations commonly use Trusted Advisor for:

governance reporting
operational reviews
security posture visibility
optimization tracking

Trusted Advisor Core Security Checks¶

The following security checks are available even with basic AWS support plans:

S3 Bucket Permissions
Security Groups - Specific Ports Unrestricted
IAM Use
MFA on Root Account
IAM Password Policy
Amazon EBS Public Snapshots
Amazon RDS Public Snapshots

These checks focus on foundational AWS security hygiene.

Advanced Trusted Advisor Checks¶

Higher-tier AWS Support plans provide additional checks such as:

exposed access keys
advanced fault tolerance analysis
operational optimization recommendations

Some advanced security recommendations require:

Business Support
Enterprise Support

Very important operational distinction.

Trusted Advisor Priority¶

Trusted Advisor Priority provides:

curated operational risks
prioritized security recommendations
AWS expert guidance

It is designed for enterprise support environments where AWS account teams help prioritize operational and security risks.

Very important enterprise governance capability.

Trusted Advisor Categories¶

Security¶

Examples:

MFA on root account
unrestricted security groups
exposed IAM access keys

Fault Tolerance¶

Examples:

Multi-AZ recommendations
backup recommendations
resilience improvements

Performance¶

Examples:

throughput optimization
workload efficiency improvements

Cost Optimization¶

Examples:

idle EC2 instances
unattached EBS volumes
unused Elastic IPs

Service Limits¶

Examples:

nearing EC2 quotas
VPC limits
IAM limits

Operational Excellence¶

Examples:

governance recommendations
workload operational improvements
AWS best-practice guidance

Architecture Example¶

Enterprise Governance and Operational Advisory Workflow¶

flowchart TD

    A[AWS Accounts and Workloads]

    A --> B[AWS Trusted Advisor]

    B --> C[Security Recommendations]

    B --> D[Fault Tolerance Reviews]

    B --> E[Cost Optimization Guidance]

    B --> F[Service Limit Monitoring]

    B --> G[Operational Excellence Reviews]

    B --> H[Amazon EventBridge]

    H --> I[AWS Systems Manager Automation]

    H --> J[AWS Lambda Remediation]

    B --> K[AWS Security Hub]

    B --> L[Trusted Advisor Priority]

    classDef aws fill:#ede7f6,stroke:#5e35b1,color:#311b92;
    classDef governance fill:#e8f5e9,stroke:#2e7d32,color:#1b5e20;
    classDef remediation fill:#fff3e0,stroke:#ef6c00,color:#e65100;

    class A,B,K,L aws;
    class C,D,E,F,G governance;
    class H,I,J remediation;

Use case: centralized governance reviews, operational hygiene analysis, and automated remediation workflows using Trusted Advisor recommendations.

Governance and Remediation Workflow¶

sequenceDiagram
    participant TA as AWS Trusted Advisor
    participant EB as Amazon EventBridge
    participant SSM as AWS Systems Manager
    participant LMB as AWS Lambda
    participant SEC as Security Team

    TA->>EB: Generate governance recommendation

    EB->>SSM: Trigger remediation workflow

    EB->>LMB: Execute custom automation

    SSM->>SEC: Report operational remediation

    LMB->>SEC: Notify governance findings

Use case: automating governance and operational remediation workflows from Trusted Advisor recommendations.

AWS Trusted Advisor vs AWS Config¶

AWS Trusted Advisor	AWS Config
best-practice recommendation platform	compliance evaluation platform
suggests improvements	continuously evaluates configurations
broad operational guidance	resource-level governance
operational hygiene focused	compliance enforcement focused

Use Trusted Advisor when:

reviewing AWS operational best practices
identifying optimization opportunities
improving governance hygiene

Use Config when:

monitoring compliance
evaluating resource configurations
detecting configuration drift

AWS Trusted Advisor vs AWS Security Hub¶

AWS Trusted Advisor	AWS Security Hub
recommendation and advisory service	centralized security findings platform
governance and optimization focused	alert aggregation focused
broad AWS best-practice checks	centralized security visibility
operational hygiene platform	security operations platform

Use Trusted Advisor when:

reviewing AWS best practices
improving governance hygiene
identifying optimization opportunities

Use Security Hub when:

aggregating findings
prioritizing security alerts
centralizing security visibility

AWS Trusted Advisor vs Amazon Inspector¶

AWS Trusted Advisor	Amazon Inspector
account-level governance checks	workload vulnerability scanning
high-level AWS recommendations	deep CVE analysis
evaluates AWS best practices	evaluates software vulnerabilities
governance and hygiene focused	workload security focused

Use Trusted Advisor when:

reviewing AWS operational hygiene
checking MFA and S3 exposure
identifying governance risks

Use Inspector when:

scanning EC2 vulnerabilities
detecting CVEs
evaluating package security

AWS Trusted Advisor vs AWS Resilience Hub¶

AWS Trusted Advisor	AWS Resilience Hub
broad operational recommendations	deep resilience assessment platform
high-level governance checks	application survivability analysis
account hygiene focused	disaster recovery readiness focused
operational optimization platform	resilience governance platform

Use Trusted Advisor when:

reviewing AWS operational best practices
improving governance hygiene
identifying optimization opportunities

Use Resilience Hub when:

validating RTO/RPO objectives
assessing DR architectures
evaluating survivability

Common Exam Traps¶

Trap 1 — Confusing Trusted Advisor and Config¶

Trusted Advisor: - suggests AWS best practices

AWS Config: - continuously evaluates compliance

Very common governance distinction.

Trap 2 — Assuming Trusted Advisor Automatically Remediates Issues¶

Trusted Advisor identifies recommendations.

Services such as: - Systems Manager - Lambda - EventBridge

commonly perform remediation.

Trap 3 — Confusing Trusted Advisor and Security Hub¶

Trusted Advisor: - operational recommendations

Security Hub: - centralized security findings aggregation

Trap 4 — Forgetting Support Plan Requirements¶

Basic support plans include only limited Trusted Advisor checks.

Advanced checks commonly require:

Business Support
Enterprise Support

Example: - exposed access key monitoring

Trap 5 — Confusing Trusted Advisor and Resilience Hub¶

Trusted Advisor: - broad operational guidance

Resilience Hub: - deep resilience assessment

Trap 6 — Assuming Trusted Advisor Only Covers Security¶

Trusted Advisor also evaluates:

cost optimization
resilience
service quotas
operational excellence
performance

Trap 7 — Ignoring Automated Governance Workflows¶

Trusted Advisor findings commonly integrate with:

EventBridge
Lambda
Systems Manager

for automated governance and remediation workflows.

Trap 8 — Confusing Governance Hygiene and Vulnerability Scanning¶

Trusted Advisor: - checks AWS operational hygiene

Amazon Inspector: - scans workloads for vulnerabilities and CVEs

5-Second Recall¶

Identity¶

AWS Trusted Advisor = AWS operational and security best-practice advisory service

Keywords¶

If the scenario mentions:

AWS best practices
operational recommendations
unrestricted security groups
MFA recommendations
service quota monitoring
governance hygiene

Answer:

→ AWS Trusted Advisor

Governance Hygiene Trigger¶

If the requirement involves:

AWS account hygiene
operational optimization
governance reviews
best-practice recommendations

Answer:

→ AWS Trusted Advisor

Compliance Trigger¶

If the scenario involves:

resource compliance
drift detection
continuous configuration evaluation

Answer:

→ AWS Config

Security Findings Trigger¶

If the requirement involves:

centralized security findings
alert aggregation
security prioritization

Answer:

→ AWS Security Hub

Vulnerability Trigger¶

If the scenario involves:

CVE scanning
workload vulnerabilities
package inspection

Answer:

→ Amazon Inspector

Resilience Trigger¶

If the requirement involves:

validating RTO/RPO
disaster recovery readiness
survivability assessments

Answer:

→ AWS Resilience Hub

Need AWS operational best-practice guidance?¶

→ AWS Trusted Advisor

Need automated remediation?¶

→ EventBridge + Systems Manager + Lambda

Need deep compliance governance?¶

→ AWS Config

Need workload vulnerability scanning?¶

→ Amazon Inspector

Quick Revision Notes¶

AWS operational and security advisory platform
evaluates AWS best practices and governance hygiene
checks unrestricted security groups and MFA usage
supports fault tolerance recommendations
monitors AWS service quotas
integrates with EventBridge and Systems Manager
Security Hub aggregates findings, Trusted Advisor gives recommendations
Config evaluates compliance, Trusted Advisor suggests improvements
Inspector scans workloads, Trusted Advisor reviews governance hygiene
Resilience Hub evaluates survivability, Trusted Advisor gives operational guidance
some advanced checks require higher-tier support plans
Trusted Advisor Priority provides curated enterprise risk visibility
foundational AWS governance and operational review platform