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Examination of the data shows that a rapidly scaling organization is experiencing challenges in maintaining robust network security for its microservices deployed across a third-party cloud provider. The current security posture relies heavily on perimeter firewalls, with limited internal segmentation and a reactive approach to incident detection. The development teams are pushing for faster deployment cycles, and the organization handles sensitive customer data, necessitating compliance with data protection regulations. Which of the following approaches represents the most effective and compliant strategy for enhancing network security architecture in this environment?
Implement a defense-in-depth strategy utilizing cloud-native security features for micro-segmentation, integrate security scanning into the CI/CD pipeline, enforce granular IAM policies with RBAC and MFA, and establish continuous monitoring with automated incident response.
Strengthen perimeter firewall rules and deploy additional intrusion detection systems at the network edge to monitor external traffic.
Remove all internal network segmentation to simplify traffic flow and improve application performance for development teams.
Focus solely on developing a comprehensive incident response plan to quickly contain and remediate security breaches as they occur.

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