Best Practices For AWS Config: Things You Must Know

Best Practices For AWS Config

AWS Config is a powerful service that allows you to assess, monitor, and manage the configurations of your AWS resources. In this article, we will explore the key strategies and recommendations to optimize your usage of AWS Config. By following these best practices, you can enhance your configuration management, ensure compliance, and strengthen the security of your AWS infrastructure. Let’s dive in and discover the best ways to leverage AWS Config effectively.

What Is AWS Config?

What Is AWS Config?AWS Config is a service provided by Amazon Web Services (AWS) that helps you assess, audit, and monitor the configurations of your AWS resources. It allows you to track the state of your AWS resources over time, detect configuration changes, and evaluate resource configurations against desired or predefined rules.

AWS Config captures the configuration details of various AWS resources in your account and records them as configuration items (CIs). These CIs include information such as resource attributes, relationships with other resources, and the current configuration state. AWS Config maintains a historical record of these configuration items, allowing you to analyze changes and track the compliance of your resources with desired configurations.

Key Features Of AWS Config

Key Features Of AWS ConfigThe key features of AWS Config include:

  • Configuration history: AWS Config provides a detailed history of configuration changes for each resource, allowing you to see how the configurations have evolved.
  • Configuration snapshots: You can take snapshots of your AWS resource configurations at any point in time, providing a point-in-time view of your resources.
  • Configuration rules: You can define rules in AWS Config to check whether your resource configurations comply with desired configurations or industry best practices. These rules can be predefined by AWS or custom rules that you define.
  • Configuration drift detection: AWS Config can detect configuration changes in your resources and identify any drift from the desired configurations. This helps you identify and address any unauthorized or unintended changes.
  • Compliance reporting: AWS Config enables you to assess the compliance of your resources with predefined or custom rules. You can generate reports to track the compliance status and identify any non-compliant resources.
  • Notifications and remediation: AWS Config can send notifications when configuration changes occur or when resources are found to be non-compliant. You can also set up automated remediation actions to revert the configurations to the desired state.

By using AWS Config, you can gain visibility into the configurations of your AWS resources, maintain compliance with security and operational standards, and quickly respond to any unauthorized changes or configuration drifts.

Best Practices For AWS Config

When using AWS Config, it’s important to follow best practices to ensure effective configuration management and monitoring. Here are some best practices to consider:

1. Enable AWS Config in all regions

Activating AWS Config in all AWS regions ensures that you capture configuration changes across your entire infrastructure. This is particularly important if you have resources distributed across multiple regions.

2. Define a configuration snapshot frequency

Set a regular snapshot frequency based on your requirements. Consider factors such as the rate of change in your environment and the level of granularity needed for auditing and compliance purposes. For highly dynamic environments, you may need more frequent snapshots.

3. Configure aggregation across accounts

If you have a multi-account environment, consider setting up an AWS Config aggregator account. This allows you to aggregate and centralize configuration data from multiple accounts, providing a unified view of your resources. It simplifies management and enables you to monitor configurations consistently across accounts.

4. Define and enforce configuration rules

AWS Config rules play a vital role in maintaining desired configurations. Use pre-defined rules provided by AWS or create custom rules to suit your specific requirements. Regularly review and update these rules as your environment evolves. Ensure that the rules align with security best practices and compliance standards.

5. Continuously monitor configuration changes

Regularly review the AWS Config configuration history and change notifications. This enables you to stay informed about changes happening in your environment. By actively monitoring configuration changes, you can quickly detect any unauthorized or unintended modifications and respond accordingly.

6. Enable notifications and automated remediation

Configure AWS Config to send notifications when configuration changes occur or non-compliant resources are identified. Notifications can be sent via Amazon Simple Notification Service (SNS) or integrated with other services like AWS Lambda. Additionally, consider setting up automated remediation actions using AWS Lambda functions to revert non-compliant resources to their desired configurations.

7. Leverage AWS Config with other AWS services

7. Leverage AWS Config with other AWS servicesIntegrate AWS Config with other AWS services to enhance your configuration management and response capabilities. For example, you can leverage AWS CloudTrail to gain additional visibility into API-level activity and correlate it with configuration changes. AWS Lambda functions can be used to perform custom actions based on AWS Config events, enabling powerful automation and response workflows.

8. Regularly review compliance reports

Utilize the compliance reports provided by AWS Config to assess the overall compliance of your resources. These reports help you identify any non-compliant resources and take appropriate actions to address them. Regularly reviewing compliance reports ensures that you maintain a strong security posture and meet regulatory requirements.

9. Implement least privilege access

Adhere to the principle of least privilege when granting access to AWS Config resources and APIs. Assign appropriate IAM roles and permissions to limit access to only authorized individuals or systems. Follow the principle of separation of duties to ensure that different responsibilities, such as configuration management and rule creation, are assigned to different individuals or teams.

10. Monitor AWS Config performance

Keep a close eye on the performance of AWS Config to ensure it can handle the volume of configuration changes in your environment. Monitor the health of the AWS Config service, including API latency, response times, and resource usage. If performance issues arise, consider optimizing the configuration snapshot frequency or aggregating data to improve performance.

Why Are These Practices Important?

Why Are These Practices Important?These best practices for AWS Config are important for several reasons:

  • Compliance and Governance: Defining and enforcing configuration rules, continuously monitoring configuration changes, and leveraging compliance reports help ensure that your resources adhere to desired configurations and compliance standards. It enables you to maintain a strong security posture, meet regulatory requirements, and demonstrate compliance to auditors.
  • Detection of Unauthorized Changes: By continuously monitoring configuration changes and receiving notifications, you can quickly detect any unauthorized or unintended modifications in your resources. This helps you identify potential security breaches, policy violations, or configuration drifts, allowing you to take immediate action to address them.
  • Automated Remediation: Configuring automated remediation actions based on AWS Config notifications and using AWS Lambda functions enables you to respond quickly to non-compliant resources. Automated remediation helps ensure that your resources are reverted to their desired configurations promptly, reducing manual effort and minimizing the time to remediate.
  • Centralized Configuration Management: Aggregating configuration data across multiple accounts or regions into a central AWS Config aggregator account provides a unified view of your resources. This centralized approach simplifies management, reduces complexity, and facilitates consistent monitoring and compliance across your entire infrastructure.
  • Integration with Other AWS Services: Integrating AWS Config with other AWS services, such as AWS CloudTrail and AWS Lambda, enhances your configuration management and response capabilities. By correlating configuration changes with API-level activity and automating actions based on events, you can gain deeper insights, streamline workflows, and improve overall operational efficiency.
  • Proactive Monitoring and Performance Optimization: Regularly reviewing compliance reports, monitoring AWS Config performance, and optimizing configuration snapshot frequencies ensure that you proactively address any compliance issues or performance bottlenecks. This helps you maintain the effectiveness and efficiency of your configuration management processes.


In conclusion, implementing best practices for AWS Config is crucial for effective configuration management and security in your AWS environment. Enabling AWS Config in all regions, defining rules, monitoring changes, and leveraging automation is key to maintaining control over your resources. Additionally, integrating AWS Config with other services and regularly reviewing compliance reports are essential. Remember, if you need further assistance, don’t hesitate to seek help from AWS documentation, forums, or consulting services.

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