Performing a drift detection operation on a CloudFormation stack determines whether the stack has drifted from its expected template configuration, and returns detailed information about the drift status of each resource in the stack that supports drift detection. You can try this out on the ASG stack by clicking the stack in the console, selecting Stack actions and clicking Detect drift.
Amazon Inspector is an automated security assessment service that helps improve the security and compliance of applications deployed on AWS. Amazon Inspector automatically assesses applications for exposure, vulnerabilities, and deviations from best practices. After performing an assessment, Amazon Inspector produces a detailed list of security findings prioritized by level of severity.
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AWS Config is a service that enables you to assess, audit, and evaluate the configurations of your AWS resources. Config continuously monitors and records your AWS resource configurations and allows you to automate the evaluation of recorded configurations against desired configurations.
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