Alibaba Cloud provides two editions of Application Load Balancer (ALB) instances: basic and standard. The features vary based on the edition. This topic describes the features of basic and standard ALB instances.

The following table describes the features supported by basic and standard ALB instances.

Feature Basic Standard
Listening protocols
QUIC Supported Supported
HTTP/2 Supported Supported
WebSocket Supported Supported
Forwarding rules
Distribute network traffic based on domain names or URLs Supported Supported
Distribute network traffic based on HTTP headers Supported Supported
Distribute network traffic based on query strings Not supported Supported
Distribute network traffic based on cookies Not supported Supported
Distribute network traffic based on HTTP request methods Not supported Supported
Distribute network traffic based on source IP address Not supported Supported
Distribute network traffic based on response status codes Not supported Supported
Distribute network traffic based on response headers Not supported Supported
Redirects Supported Supported
Rewrite requests or return custom responses Not supported Supported
Add or delete headers Not supported Supported
Traffic mirroring Not supported Supported (submit a ticket to be included in the whitelist first)
QPS throttling Not supported Supported (submit a ticket to be included in the whitelist first)
AScript Not supported Supported (submit a ticket to be included in the whitelist first)
Security
Access control based on whitelists and blacklists Supported Supported
TLS cipher suites Supported Supported
Server Name Indication (SNI) for multiple certificates Supported Supported
Rivest-Shamir-Adleman (RSA) and elliptic-curve cryptography (ECC) certificates Supported Supported
ECC certificates Supported Supported
End-to-end data transfer over HTTPS Not supported Supported
Custom TLS cipher suites Not supported Supported
TLS 1.3 Supported Supported
Monitoring
Access log management Supported Supported