Answer: Build new base images when patches are available, and use a CI/CD pipeline to rebuild VMs, deploying incrementally.

The question emphasizes leveraging the elastic nature of cloud computing for Windows VM patching. Option A is optimal because it aligns with cloud-native best practices: building new base images with patches and using CI/CD pipelines for incremental VM rebuilds ensures consistency, reduces drift, and supports automation. This approach is supported by the community consensus (86% upvotes for A) and detailed reasoning, such as avoiding patching individual running instances and using tools like Packer. Option C (Deployment Manager with Instance Groups) is a valid alternative for orchestration but is less comprehensive than A's CI/CD integration. Option B (Domain Controller with Group Policy) is on-premises-centric and contradicts cloud elasticity. Option D (rebooting with startup scripts) is unreliable, as it depends on internet access and lacks idempotency, making it unsuitable for production environments. While some comments mention VM Manager for patching, it is not among the options, and A remains the most robust solution given the available choices.

Author: LeetQuiz Editorial Team