EHR Healthcare, a provider of electronic health record software, is migrating from colocation facilities to Google Cloud. You are responsible for designing the Google Cloud network architecture for Google Kubernetes Engine, taking into account the need for scalability, high availability, and security. Considering EHR Healthcare's business requirements for a minimum of 99.9% availability and reduced latency, as well as technical requirements for secure and high-performance connections, consistent logging, and dynamic scaling, what should you do to reduce the attack surface?