AWS Case study :

Step 1 : Create one EC2 in AZ A in Ireland region
Step 2 : Create one more EC2 in AZ B in Ireland region
Step 3 : Create a target group and add two EC2 instances to target group
Step 4 : Create a Application load balancer
Step 5 : Render the ALB url and difference the url hits going to EC2 in AZ A and AZ B.