This service can be used to store and retrieve any amount of data at any time, from anywhere on the web:

Elasticity can be defined as the degree to which an infrastructure is able to adapt to work loads by scaling (provisioning) resources up and down automatically.

AWS Free Tier is wide enough to get acquainted with almost all services.

It is possible to create custom OS images in EC2.

What does AWS use for content delivery?

AWS provides a scalable, distributed in-memory cache service called:

You are migrating an on-premise RabbitMQ cluster into AWS. Which migration path should you choose for ease of both maintenance and deployment?

What option is best for Auto Scaling your EC2 instances for predictable traffic patterns?

Which big data store will let you store large streams of user activity data coming from both web and mobile applications?

Your company has on-premise servers with an existing onsite backup solution that also replicates backups to another campus on the other side of the country with its own on-site backup solution. You have been asked to create a third level of redundancy by also storing these backups in the cloud. In the event of a primary and secondary backup failure, your boss wants to know that the cloud backups can be accessible as fast as possible to reduce downtime during the recovery. What S3 storage class do you recommend for cost and performance?

A nontechnical client wants to migrate a WordPress site to AWS from a private server managed by a third-party hosting company. Which AWS service should you recommend to migrate the site to?