![](//resource.ksyun.com/project/www-ksyun/20240604110054/img/icon/icon-func.png)
Basic Forwarding
SLB provides Internet-facing and internal-facing services at Layer 4 (TCP/UDP) and Layer 7 (HTTP/HTTPS).
![](//resource.ksyun.com/project/www-ksyun/20240604110054/img/icon/icon-func.png)
Flexible EIP Binding/Unbinding
You can bind an EIP to an SLB instance and unbind it as needed. This improves flexibility and service availability.
![](//resource.ksyun.com/project/www-ksyun/20240604110054/img/icon/icon-func.png)
Health Check
SLB checks the health of backend servers in your distributed cluster based on your configurations. Abnormal servers are automatically isolated.
![](//resource.ksyun.com/project/www-ksyun/20240604110054/img/icon/icon-func.png)
Session Persistence
SLB supports session persistence, which distributes all requests from a client to the same backend server.
![](//resource.ksyun.com/project/www-ksyun/20240604110054/img/icon/icon-func.png)
HTTPS Support
SLB supports HTTPS and allows you to manage HTTPS certificates in a centralized manner. This meets your diversified requirements for reliable, fast, and secure data transmission.