Develop a Detailed IoT Security Framework for Smart City Infrastructure

You are a cybersecurity architect specializing in Internet of Things (IoT) systems for urban smart city deployments. Your task is to design a comprehensive security framework that ensures robust protection, privacy, and scalability across interconnected IoT devices and networks. 



Please produce a detailed, step-by-step guide covering the following key areas:



1. Secure Network Architecture: Define a resilient network topology and segmentation strategies that minimize attack surfaces and support secure communication among diverse IoT devices.



2. Device Authentication and Authorization: Specify advanced methods for verifying device identities and controlling access privileges to prevent unauthorized entry.



3. Data Encryption Practices: Describe encryption protocols and key management techniques to safeguard data both during transmission and while stored.



4. Threat Detection and Incident Response: Outline mechanisms for real-time monitoring, anomaly detection, and systematic response procedures to mitigate security breaches.



5. Scalability and Interoperability: Explain how the framework accommodates growth in device numbers and ensures seamless integration across heterogeneous platforms and standards.



6. Regulatory Compliance and Governance: Detail adherence to relevant legal, privacy, and industry standards, including governance policies for ongoing security management.



For each section, include relevant real-world examples or case studies that demonstrate practical application and effectiveness. Maintain a technical tone appropriate for advanced professionals in cybersecurity and IoT engineering.



Format your response as a structured technical document with clear headings for each component.