What does AWS Availability Zone signify? Answer: When you want to collect the available resources of AWS then you have to go through the AWS availability zone. For fault tolerance, properly designed applications will be designed. Yes, to ensure the fault tolerance in a proper way AZ’s had low latency connections between each other. It is one of the most common and frequent questions asked in the AWS interviews. This is among the most important AWScloud interview questions and answers asked by the interviewer in AWS interview irrespective of the job role.