Answer is D. Agility is the ability to scale up and down during peek and down times.

Reference:

https://aws.amazon.com/organizations/

A is correct because it is aligned with the design principal of scale horizontally.

Answer is B.

AWS responsibility “Security of the Cloud” - AWS is responsible for protecting the infrastructure

that runs all of the services offered in the AWS Cloud.

This infrastructure is composed of the hardware, software, networking, and facilities that run AWS Cloud services.

https://aws.amazon.com/compliance/shared-responsibility-model/

B. HA has nothing related to availability, as the resources in HA are triggered only during a failure.

Definitely C.

"AWS is responsible for protecting the infrastructure that runs all of the services offered in the AWS Cloud."

=> hence A, B, D are incorrect as they're AWS' responsibilities

The keyword is "separate billing". Answer is C.

C is incorrect - because logs are stored in S3 bucket and we need to pay for S3 usage. So given answers are correct.

Answers: D, E.

CloudWatch provides up to 1-second visibility of metrics and logs data, 15 months of data retention (metrics), and the ability to perform calculations on metrics.

This allows you to perform historical analysis for cost optimization and derive real-time insights into optimizing applications and infrastructure resources.

Reference:

https://aws.amazon.com/getting-started/tutorials/get-a-domain/

A) because lower latency is important for user experience, and

C) because its the next most important, if you break the rules of the region, then your in trouble..

B was pretty hard to decide between since you wanna not deploy in the wrong language but .. obviously built the application in a language of target audience and there are translators.