# ADVPERF05-BP03 Use load balancers to improve high availability and load distribution in your workload
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 Use the load balancing service provided by AWS to enhance the high availability of applications. In the event of disruptions that cause targets to become unhealthy, load balancers can automatically exclude unhealthy targets from traffic routing. 

## Implementation guidance
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 Elastic Load Balancing (ELB) employs various load balancing algorithms, such as round-robin, least outstanding requests, or IP hash, to distribute traffic evenly across healthy targets, which optimizes resource utilization and prevents overloading of individual targets. It supports content-based routing, which routes traffic based on the content of the request, such as the URL path or headers, efficiently handling different types of requests. ELB can offload SSL/TLS decryption and encryption from your targets, reducing the computational overhead on your application servers and improving overall performance. 

## Key AWS services
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+  [Amazon Elastic Load balancer (ELB)](https://aws.amazon.com/elasticloadbalancing/) 
+  [Amazon Elastic Compute Cloud (EC2)](https://aws.amazon.com/ec2/) 

## Resources
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+  [What's the Difference Between Application, Network, and Gateway Load Balancing?](https://aws.amazon.com/compare/the-difference-between-the-difference-between-application-network-and-gateway-load-balancing/) 
+  [Monitor your Application Load Balancers](https://docs.aws.amazon.com/elasticloadbalancing/latest/application/load-balancer-monitoring.html) 
+  [ELB Best Practices Guides](https://aws.github.io/aws-elb-best-practices/)