Application Load Balancer is best suited for load balancing of HTTP and HTTPS traffic and provides advanced request routing targeted at the delivery of modern application architectures, including microservices and containers. Operating at the individual request level (Layer 7), Application Load Balancer routes traffic to targets within Amazon Virtual Private Cloud (Amazon VPC) based on the content of the request.

Application Load Balancers offer several features:

• Each service can serve traffic from multiple load balancers and expose multiple load balanced ports by specifying multiple target groups.
• They are supported by tasks using both the Fargate and EC2 launch types.
• Application Load Balancers allow containers to use dynamic host port mapping.
• Application Load Balancers support path-based routing and priority rules.

Benefits:

• Highly available.
• Secure.
• Elastic.
• Flexible.
• Robust monitoring & auditing.
• Hybrid load balancing.