What two interfaces does Amazon S3 use?

What part of AWS handles their DNS?

AWS provides consolidated billing, allowing one account to pay for multiple services:

What is Amazon Elastic Transcoder?

When in a 'Stopped' state, an EC2 instance is billed:

AWS provides a highly available and scalable Domain Name Service called:

In addition to CloudFormation, you can use other orchestration tools to automate server formation and maintenance. Which tool is not an efficient choice for the orchestration of a large infrastructure?

What is the best practice for maintaining Windows EC2 instances and applying updates?

Your web application is getting a suspicious amount of bad requests from foreign IP addresses. Your business is operating in only a few countries and you would like to block any other traffic. What is the best practice for limiting access to your web application by country?

Your application is sending 50,000 emails through SES each day. Since you must maintain a low bounce rate to avoid being put on probation, what simple system do you architect to automatically process hard bounces?

What privilege is specific to the AWS root account, and cannot be granted to another IAM user on the account?