A company’s shopping website is hosted in an Auto Scaling group (ASG) of Amazon EC2 instances. There’s a sale coming up and the company anticipate huge traffic on the website. Currently, there’s a dynamic target tracking policy which scales up the instances gradually. However, the EC2 instances are taking a long time to spin up and the load balancer is sending traffic to unhealthy instances. How can the issue be resolved with minimal operational overhead and cost?