A company that offers a cloud-based video streaming service have deployed edge servers in various regions to handle the majority of video content delivery during normal workloads. The edge servers process and deliver the video streams to users, ensuring low latency and high performance. However, during special events or popular live streams, there is a sudden increase in the number of viewers, leading to unexpected surges in video traffic. This occasional workload spike exceeds the capacity of the edge servers to handle the incoming requests effectively. In this case, the appropriate design approach to handle the varying workload is the