A three-tier application is being created to host small news articles. The application is expected to serve millions of users. When breaking news occurs, the site must handle very large spikes in traffic without significantly impacting database performance.

Use Auto Scaling groups to increase the number of Amazon EC2 instances delivering the web application

Use Auto Scaling groups to increase the size of the Amazon RDS instances delivering the database

Use Amazon DynamoDB strongly consistent reads to adjust for the increase in traffic

Use Amazon DynamoDB Accelerator (DAX) to cache read operations to the database