Alibaba Cloud Certified Associate (ACA) Practice Test

Using Alibaba Cloud Auto Scaling provides the significant benefit of adjusting the number of Elastic Compute Service (ECS) instances based on traffic. When a company experiences traffic spikes, whether due to seasonal events, marketing campaigns, or unforeseen surges in user activity, it's essential to have the capability to provision additional resources dynamically to meet the increased demand.

Auto Scaling facilitates this by automatically monitoring the traffic and scaling the number of active ECS instances up or down in real time. This ensures that the company can handle high volumes of requests without experiencing performance degradation or downtime, which could lead to customer dissatisfaction. Additionally, once the demand returns to normal levels, Auto Scaling will decrease the number of active instances, optimizing costs and resources.

This capability aligns closely with modern cloud computing practices, where flexibility and responsiveness to traffic fluctuations are crucial for maintaining service quality and managing operational costs efficiently.