How can a user achieve high availability for a web application hosted on AWS?

How can a user achieve high availability for a web application hosted on AWS?
A . Use a Classic Load Balancer across multiple AWS Regions
B . Use an Application Load Balancer across multiple Availability Zones in one AWS Region
C . Set up automatic scaling and load balancing with another application instance running on premises
D . Use the AWS Region with the highest number of Availability Zones

View Answer

Answer: B