6.4 Identify security gaps through architectural reviews and cost analysis. - In this episode, we dive into Task Statement 6.4 from the AWS Certified Security - Specialty exam, which focuses on identifying security gaps through architectural reviews and cost analysis. We explore how Senior AWS Engineers leverage tools like AWS Cost Explorer, Trusted Advisor, and the Well-Architected Tool to uncover vulnerabilities by analyzing cloud architecture and usage patterns, linking financial anomalies to potential security incidents such as data exfiltration or unauthorized access. Key strategies discussed include reducing attack surfaces through zero-trust models, micro-segmentation, just-in-time access, and proactive removal of unused resources to minimize exposure points. The Well-Architected Framework is highlighted as a structured approach for conducting gap analyses, with a special emphasis on the Security and Cost Optimization pillars for building resilient and efficient cloud systems. Listeners will learn how to use AWS monitoring tools to detect behavioral anomalies in resource utilization and automate remediation, thereby transforming cost management into a powerful security intelligence tool. By mastering these best practices, engineers can continuously improve their security posture, enhance compliance, and drive significant cost savings while maintaining secure, agile cloud environments.