Which service assists in server load balancing on Alibaba Cloud?

Alibaba Cloud Load Balancer is specifically designed to distribute incoming application traffic across multiple servers to ensure no single server becomes overwhelmed. This service enhances the availability and responsiveness of applications by effectively balancing the load among the servers, which is critical for maintaining high performance and reliability.

The load balancer can automatically adjust to changes in traffic patterns, ensuring that resources are efficiently utilized. It supports various protocols and offers features such as health checks, which help to route traffic only to optimal instances, providing resilience and fault tolerance for applications.

In contrast, the other services listed have distinct primary functions. Alibaba Cloud CDN primarily focuses on content delivery by caching static content close to end-users, thereby reducing latency. Alibaba Cloud Elastic Container Service is aimed at deploying and managing containerized applications, providing orchestration capabilities rather than direct load balancing of incoming traffic. Alibaba Cloud Virtual Private Cloud, on the other hand, provides networking capabilities for resources, allowing users to define their network environment but does not inherently provide load balancing features.

Thus, the Alibaba Cloud Load Balancer is the correct choice for assisting in server load balancing, as it directly addresses the need for distributing traffic effectively across server resources.