Endpoint - Endpoints can be NLB, ALB, EC2 instances or Elastic IP addresses. An ALB endpoint can be an internet-facing or internal. Traffic is routed to endpoints based on configuration options that you choose, such as endpoint weights. For each endpoint, you can configure weights, which a numbers that you can use to specify the proportion of traffic to route to each one. This can be useful, for example, to do performance testing within a region.