Elastic Load Balancing

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<fullname>Elastic Load Balancing</fullname> <p>A load balancer can distribute incoming traffic across your EC2 instances. This enables you to increase the availability of your application. The load balancer also monitors the health of its registered instances and ensures that it routes traffic only to healthy instances. You configure your load balancer to accept incoming traffic by specifying one or more listeners, which are configured with a protocol and port number for connections from clients to the load balancer and a protocol and port number for connections from the load balancer to the instances.</p> <p>Elastic Load Balancing supports three types of load balancers: Application Load Balancers, Network Load Balancers, and Classic Load Balancers. You can select a load balancer based on your application needs. For more information, see the <a href="https://docs.aws.amazon.com/elasticloadbalancing/latest/userguide/">Elastic Load Balancing User Guide</a>.</p> <p>This reference covers the 2012-06-01 API, which supports Classic Load Balancers. The 2015-12-01 API supports Application Load Balancers and Network Load Balancers.</p> <p>To get started, create a load balancer with one or more listeners using <a>CreateLoadBalancer</a>. Register your instances with the load balancer using <a>RegisterInstancesWithLoadBalancer</a>.</p> <p>All Elastic Load Balancing operations are <i>idempotent</i>, which means that they complete at most one time. If you repeat an operation, it succeeds with a 200 OK response code.</p>

Versions
2
Latest version
v2015-12-01
Last updated
7d ago
Organization
APIs Guru

Version history

2 published versions, newest first.

  1. v2015-12-01LatestPublished

    <fullname>Elastic Load Balancing</fullname> <p>A load balancer distributes incoming traffic across targets, such as your EC2 instances. This enables you to increase the availability of your application. The load balancer also monitors the health of its registered targets and ensures that it routes traffic only to healthy targets. You configure your load balancer to accept incoming traffic by specifying one or more listeners, which are configured with a protocol and port number for connections from clients to the load balancer. You configure a target group with a protocol and port number for connections from the load balancer to the targets, and with health check settings to be used when checking the health status of the targets.</p> <p>Elastic Load Balancing supports the following types of load balancers: Application Load Balancers, Network Load Balancers, Gateway Load Balancers, and Classic Load Balancers. This reference covers the following load balancer types:</p> <ul> <li> <p>Application Load Balancer - Operates at the application layer (layer 7) and supports HTTP and HTTPS.</p> </li> <li> <p>Network Load Balancer - Operates at the transport layer (layer 4) and supports TCP, TLS, and UDP.</p> </li> <li> <p>Gateway Load Balancer - Operates at the network layer (layer 3).</p> </li> </ul> <p>For more information, see the <a href="https://docs.aws.amazon.com/elasticloadbalancing/latest/userguide/">Elastic Load Balancing User Guide</a>.</p> <p>All Elastic Load Balancing operations are idempotent, which means that they complete at most one time. If you repeat an operation, it succeeds.</p>

    7d ago
    6/26/2026
    Changelog

    Imported from specification (follow-on revision in same project)

  2. v2012-06-01Published

    <fullname>Elastic Load Balancing</fullname> <p>A load balancer can distribute incoming traffic across your EC2 instances. This enables you to increase the availability of your application. The load balancer also monitors the health of its registered instances and ensures that it routes traffic only to healthy instances. You configure your load balancer to accept incoming traffic by specifying one or more listeners, which are configured with a protocol and port number for connections from clients to the load balancer and a protocol and port number for connections from the load balancer to the instances.</p> <p>Elastic Load Balancing supports three types of load balancers: Application Load Balancers, Network Load Balancers, and Classic Load Balancers. You can select a load balancer based on your application needs. For more information, see the <a href="https://docs.aws.amazon.com/elasticloadbalancing/latest/userguide/">Elastic Load Balancing User Guide</a>.</p> <p>This reference covers the 2012-06-01 API, which supports Classic Load Balancers. The 2015-12-01 API supports Application Load Balancers and Network Load Balancers.</p> <p>To get started, create a load balancer with one or more listeners using <a>CreateLoadBalancer</a>. Register your instances with the load balancer using <a>RegisterInstancesWithLoadBalancer</a>.</p> <p>All Elastic Load Balancing operations are <i>idempotent</i>, which means that they complete at most one time. If you repeat an operation, it succeeds with a 200 OK response code.</p>

    7d ago
    6/26/2026
    Changelog

    Imported from specification