Which service enables hybrid cloud connectivity?

Alibaba Cloud VPN Gateway establishes secure, encrypted communication tunnels (IPsec-VPN and SSL-VPN) between an enterprise's on-premises data center or local network and Alibaba Cloud Virtual Private Clouds (VPC). It enables cost-effective, reliable, and secure hybrid cloud connectivity without requiring physical leased line infrastructure.

Option B: Object Storage Service (OSS) provides object storage accessible over public or private network endpoints, not network connectivity infrastructure.
Option C: Elastic Compute Service (ECS) provides cloud computing instances within a network, but does not establish hybrid network connection links.
Option D: Resource Access Management (RAM) manages identity and access control permissions, not network connectivity between hybrid environments.

- Alibaba Cloud Documentation, "VPN Gateway Product Overview", Section: Hybrid Cloud Networking and IPsec-VPN Connectivity, Doc ID: vpngwoverview01.

- Alibaba Cloud Documentation, "Hybrid Cloud Architecture Whitepaper", Section 3: Establishing Secure VPC Connectivity via VPN Gateway.