You're tasked with implementing a robust security monitoring solution for an organization using Google Cloud. The organization wants real-time alerts based on the detection of suspicious activities across all GCP services. What GCP service should be your primary focus for achieving this requirement?

*Explanation: * _Cloud Security Command Center._ The correct focus for achieving real-time security monitoring with alerts for suspicious activities across all GCP services is Cloud Security Command Center. It provides a comprehensive view of security alerts, including real-time threats and is specifically designed for this purpose. Cloud Monitoring focuses on metrics and alerts but is not primarily security-oriented. Cloud Audit Logs records activities but does not offer real-time alerts for suspicious activities. Cloud Armor is more focused on application-layer defense, not overall security monitoring. Cloud Identity-Aware Proxy primarily deals with authentication and access control.*