Request matching based on:<ul><li>[Path](https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/route/v3/route_components.proto#config-route-v3-routematch) (prefix, full path and safe regex)</li><ul><li>[case_sensitive](https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/route/v3/route_components.proto#envoy-v3-api-msg-config-route-v3-routematch) must be true else config is NACKed</li></ul><li>[Headers](https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/route/v3/route_components.proto#envoy-v3-api-msg-config-route-v3-headermatcher)</li></ul>Request routing to multiple clusters based on [weights](https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/route/v3/route_components.proto#config-route-v3-weightedcluster) | [A28](https://github.com/grpc/proposal/blob/master/A28-xds-traffic-splitting-and-routing.md) | v1.31.0 | v1.31.0 | v1.31.0 | v1.3.0 |
Case insensitive prefix/full path matching:<ul><li>[case_sensitive](https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/route/v3/route_components.proto#envoy-v3-api-msg-config-route-v3-routematch) can be true or false</li></ul> | | v1.34.0 | v1.34.0 | v1.34.0 | v1.3.0 |
Support for [xDS v3 APIs](https://www.envoyproxy.io/docs/envoy/latest/api-v3/api) | [A30](https://github.com/grpc/proposal/blob/master/A30-xds-v3.md) | v1.36.0 | v1.36.0 | v1.36.0 | v1.4.0 |
Support for [xDS v2 APIs](https://www.envoyproxy.io/docs/envoy/latest/api/api_supported_versions) | [A27](https://github.com/grpc/proposal/blob/master/A30-xds-v3.md#details-of-the-v2-to-v3-transition) | <v1.51.0|<v1.53.0|TBA|<v1.8.0|
Support for [xDS v2 APIs](https://www.envoyproxy.io/docs/envoy/latest/api/api_supported_versions) | [A27](https://github.com/grpc/proposal/blob/master/A30-xds-v3.md#details-of-the-v2-to-v3-transition) | <v1.51.0|<v1.53.0|<v1.54.0|<v1.8.0|
[Circuit Breaking](https://www.envoyproxy.io/docs/envoy/latest/api-v3/config/cluster/v3/circuit_breaker.proto):<ul><li>Only max_requests is supported.</li></ul> | [A32](https://github.com/grpc/proposal/blob/master/A32-xds-circuit-breaking.md) | v1.37.1 (N/A for PHP) | v1.37.1 | v1.37.0 | v1.4.0 |
[Fault Injection](https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/filters/http/fault/v3/fault.proto):<br> Only the following fields are supported:<ul><li>delay</li><li>abort</li><li>max_active_faults</li><li>headers</li></ul> | [A33](https://github.com/grpc/proposal/blob/master/A33-Fault-Injection.md) | v1.37.1 | v1.37.1 | v1.37.0 | v1.4.0 |
@ -68,8 +68,8 @@ Support for [xDS v2 APIs](https://www.envoyproxy.io/docs/envoy/latest/api/api_su
[Security](https://www.envoyproxy.io/docs/envoy/latest/configuration/security/security):<br>Uses [certificate providers](https://github.com/grpc/proposal/blob/master/A29-xds-tls-security.md#certificate-provider-plugin-framework) instead of SDS | [A29](https://github.com/grpc/proposal/blob/master/A29-xds-tls-security.md) | v1.41.0<br>(C++ and Python) | v1.41.0 | 1.41.0 | |
[Authorization (RBAC)](https://www.envoyproxy.io/docs/envoy/latest/api-v3/extensions/filters/http/rbac/v3/rbac.proto):<br><ul><li>`LOG` action has no effect<li>CEL unsupported and rejected</ul> | [A41](https://github.com/grpc/proposal/blob/master/A41-xds-rbac.md) | v1.51.0<br>(C++ and Python) | v1.42.0 | 1.42.0 | |
[Outlier Detection](https://www.envoyproxy.io/docs/envoy/latest/intro/arch_overview/upstream/outlier):<br>Only the following detection types are supported:<ul><li>Success Rate</li><li>Failure Percentage</li></ul> | [A50](https://github.com/grpc/proposal/blob/master/A50-xds-outlier-detection.md) | v1.51.0 | v1.49.0 | v1.50.0 | v1.7.0 | |