API Overview

A combination of these types of APIs allows you to use all functions provided by ELB. Table 1 describes the APIs provided by ELB.

**Table 1** ELB APIs
Type	Resource	Description
Dedicated load balancer APIs	Load balancer	Creates, updates, deletes a load balancer, shows the details of a load balancer, lists load balancers, and queries the status tree for a load balancer.
	Certificate	Creates, modifies, and deletes a certificate, and lists certificates.
	Security policy	Adds, modifies, and deletes a security policy, shows the details of a security policy, and lists security policies.
	IP address group	Configures, modifies, and disables an IP address group, shows the details of an IP address group, and lists IP address groups.
	Listener	Adds, modifies, and deletes a listener, shows the details of a listener, and lists listeners.
	Backend server group	Adds, modifies, and deletes a backend server group, shows the details of a backend server group, and lists backend server groups.
	Backend server	Adds, modifies, and deletes a backend server, shows the details of a backend server, and lists backend servers.
	Health check	Configures, modifies, and disables a health check, shows the details of a health check, and lists health checks.
	Forwarding policy	Adds, updates, and deletes a forwarding policy, shows the details of a forwarding policy, lists forwarding policies, and updates forwarding policy priorities.
	Forwarding rule	Adds, modifies, and deletes a forwarding rule, shows the details of a forwarding rule, and lists forwarding rules.
Classic load balancer APIs	Load balancer	Creates, modifies, and deletes a load balancer, delete a public network load balancer, shows the details of a load balancer, and lists load balancers.
	Listener	Adds, modifies, and deletes a listener, shows the details of a listener, and lists listeners.
	Health check	Configures, modifies, and disables a health check, and shows the details of a health check.
	Backend server	Adds, queries, and removes backend ECSs.
	Quota	Queries the load balancer and listener quotas.
	Certificate	Creates, modifies, and deletes a certificate, shows details of a certificate, and lists certificates.
	Job status	Queries the job status.
	Monitoring metrics	Queries monitoring metrics of load balancers.
Enhanced load balancer APIs	Load balancer	Creates, updates, deletes a load balancer, shows the details of a load balancer, lists load balancers, and queries the status tree for a load balancer.
	Listener	Adds, updates, and deletes a listener, shows the details of a listener, and lists listeners.
	Backend server group	Adds, updates, and deletes a backend server group, shows the details of a backend server group, and lists backend server groups.
	Backend server	Adds, updates, and removes a backend server, shows the details of a backend server, and lists backend servers.
	Health check	Configures, updates, and disables a health check, and shows the details of a health check.
	Forwarding policy	Adds, updates, and deletes a forwarding policy, shows the details of a forwarding policy, and lists forwarding policies.
	Forwarding rule	Adds, updates, and deletes a forwarding rule, shows the details of a forwarding rule, and lists forwarding rules.
	Whitelist	Creates, updates, and deletes a certificate, and lists whitelist.
	SSL certificate	Creates, updates, and deletes a certificate, and lists certificates.
	Tag	Adds a tag to and deletes a tag from a load balancer, batch adds and deletes load balancer tags, lists all tags of a load balancer, lists tags of all load balancers, queries load balancers by tag, adds and deletes a tag to a listener, batch adds and deletes tags to a listener, lists all tags of a listener, lists tags of all listeners, and queries listeners by tag.