Final answer:
Auto Scaling is the service that can help your company match the required compute capacity to spikes in traffic during flash sales.
Step-by-step explanation:
The service that can help your company dynamically match the required compute capacity to the spike in traffic during flash sales is Auto Scaling. Auto Scaling is a feature provided by Amazon Web Services (AWS) that automatically adjusts the number of EC2 instances in your application based on the incoming traffic. It allows your company to scale up or down its compute capacity seamlessly, ensuring optimal performance during peak periods.
For example, during a flash sale where there is a sudden surge in traffic to your e-commerce website, Auto Scaling will help automatically add more EC2 instances to handle the increased workload. Once the traffic reduces, it can also remove unnecessary instances, reducing costs and optimizing resources.
Other options provided in the question, such as Amazon Glacier, Amazon Simple Notification Service (Amazon SNS), and Amazon Virtual Private Cloud (Amazon VPC), are not directly related to dynamically matching compute capacity to traffic spikes.