Alibaba Cloud CDN is specifically designed to accelerate content delivery by distributing and caching content at geographically distributed points of presence. When a user requests an accelerated resource, CDN DNS scheduling assigns an appropriate PoP. If the resource is cached there, the PoP returns it directly without requiring a round trip to the origin infrastructure. Alibaba Cloud documentation explicitly states that static resources are cached on the nearest PoP to reduce latency and improve access efficiency.

This directly satisfies both key requirements in the question: caching static content and directing users toward edge infrastructure close to their locations. If content is not cached or has expired, the CDN PoP performs an origin fetch and then serves the resource.

GTM can perform DNS-based geographical or latency routing among application endpoints and regions, but it is not itself a distributed static-content caching service. Express Connect provides private dedicated connectivity between enterprise/on-premises networks and Alibaba Cloud. SLB distributes traffic among backend servers but does not provide a worldwide edge caching network.

Therefore, Alibaba Cloud CDN is the only listed service that simultaneously implements PoP-based edge delivery and static-content caching.

Study Guide reference: Delivering Content on Alibaba Cloud; content acceleration and global application-delivery architecture.

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