Question

Which of the following examples supports the cloud design principle “design for failure and nothing will fail’’?

A) Adding an Elastic Load Balancer in front of a Single Amazon Elastic Cloud Compute (Amazon EC2) instance
B) Creating and deploying the most cost-effective solution
C) Deploying an Application in multiple Availability Zones
D) Using Amazon CloudWatch alerts to monitor performance

Answer 1

C) Deploying an Application in multiple Availability Zones

Each AZ is a set of one or more data centers. By deploying your AWS resources to multiple Availability zones , you are designing with failure with mind. So if one AZ were to go down , the other AZ’s would still be up and running and hence your application would be more fault tolerant.