We actually use both. We have the cloud provider's load balancers balancing to HAProxy load balancers. We use HAProxy, because it is much more flexible and powe

We actually use both. We have the cloud provider's load balancers balancing to HAProxy load balancers. We use HAProxy, because it is much more flexible and powerful the the cloud provider's LB, and we use the cloud provider LB because it integrates because it is simpler to terminate public TLS with them and manage the certificates.