Which boundary types are specifically protected in Alibaba Cloud security practices?

The choice highlighting Internet Boundary, VPC Boundary, and Host Boundary is accurate as it reflects the specific layers where security practices are applied within Alibaba Cloud's architecture.

The Internet Boundary refers to the protective measures deployed at the edge of the Alibaba Cloud network to defend against external threats originating from the internet. This includes configuring firewalls, intrusion detection systems, and DDoS mitigation strategies to secure against potential attacks.

The VPC (Virtual Private Cloud) Boundary is crucial for segmenting resources within the cloud. Security controls at this layer help protect virtual networks by isolating workloads and enforcing rules regarding inter-instance communication and external access.

The Host Boundary focuses on securing the individual server or virtual machine level. This involves implementing measures such as configuration management, operating system hardening, and monitoring to ensure that vulnerabilities are minimized on the host itself.

Together, these boundary types illustrate a comprehensive approach to security in cloud environments, addressing risks at multiple levels and reinforcing the overall security posture of cloud deployments. This multi-tiered boundary protection strategy is essential for safeguarding sensitive data and preventing unauthorized access.