AWS Certified Cloud

Question 1

Amazon EC2

Answer 1

Amazon Elastic Compute Cloud - is a web service that provides secure, resizable compute capacity in the cloud.

Question 2

On-Demand “Pay as you go”

Answer 2

Pay only for running instances and only for the time that they’re running.
On-Demand instances let you pay for compute capacity by the hour or minute with no long-term commitments.

Question 3

Reserved Instances

Answer 3

in this type of EC2 instance, you make a 1-year or 3-year spending commitment and get a discount. Remember you can choose to pay all, some, or no upfront. Of course, the more you pay upfront, the bigger the discount

Question 4

Spot Instance

Answer 4

These are cheap instances but with a risk of getting switched off. AWS sets a hourly “Spot price” which is lower than the on-demand rate, and you get to capitalize on unused EC2 instances at a discounted price.

major caveat is that If the Spot price goes above your asking price, your server gets turned off.

Question 5

Dedicated EC2 Hosts

Answer 5

This is where you get your own physical hardware to run your EC2 servers on. Some software and/or government regulations require this,

Question 6

EBS

Answer 6

Amazon Elastic Block Store (EBS) is an easy-to-use, high-performance block storage service designed for use with Amazon Elastic Compute Cloud (EC2) for both throughput and transaction-intensive workloads at any scale.