Interface Endpoint vs Gateway Endpoint vs Gateway Load Balancer Endpoint

Interface EndpointGateway EndpointGateway Load Balancer Endpoint
  • An elastic network interface with a private IP address that serves as an entry point for traffic destined to a supported AWS service, endpoint service, or AWS Marketplace service.
  • For each interface endpoint, you can choose only one subnet per Availability Zone. Endpoints are regional, which means they are only usable within the same region they are created in.
  • Since interface endpoints use ENIs, they also use security groups to control traffic.
  • Can be accessed through AWS VPN connections or AWS Direct Connect connections, through intra-region VPC peering connections from Nitro instances, and through inter-region VPC peering connections from any type of instance.
  • An endpoint only returns responses to traffic that is initiated from resources in your VPC.
  • An interface endpoint supports IPv4 TCP traffic only.
  • You can add endpoint policies to interface endpoints. The Amazon VPC endpoint policy defines which principal can perform which actions on which resources. An endpoint policy does not override or replace IAM user policies or service-specific policies. It is a separate policy for controlling access from the endpoint to the specified service.
  • After you create an interface endpoint, it’s available to use when it’s accepted by the service provider. The service provider must configure the service to accept requests automatically or manually. AWS services and AWS Marketplace services generally accept all endpoint requests automatically.
  • An interface endpoint (except S3 interface endpoint) has corresponding private DNS hostnames.
  • A gateway that is a target for a specific route in your route table, used for traffic destined to a supported AWS service which is either DynamoDB or S3.
  • You can create multiple gateway endpoints in a single VPC, for example, to multiple services. You can also create multiple endpoints for a single service, and use different route tables to enforce different access policies from different subnets to the same service. But you cannot have multiple endpoint routes to the same service in a single route table.
  • You can modify the endpoint policy that’s attached to your gateway endpoint, and add or remove the route tables that are used by the endpoint.
  • Gateway endpoints are supported within the same region only. You cannot create an endpoint between a VPC and a service in a different region.
  • Gateway endpoints support IPv4 traffic only.
  • You must enable DNS resolution in your VPC, or if you’re using your own DNS server, ensure that DNS requests to the required service are resolved correctly to the IP addresses maintained by AWS.
  • When you associate a route to your gateway endpoint, all instances in subnets associated with this route table automatically use the endpoint to access the service.
  • A gateway endpoint cannot be used beyond the scope of the VPC it is linked to.
  • Enables you to intercept traffic and route it to a service that you’ve configured using Gateway Load Balancers.
  • You choose the VPC and subnet that your endpoint should be created in. An endpoint network interface is assigned a private IP address from the IP address range of your subnet. You cannot change the subnet later.
  • After you create the Gateway Load Balancer endpoint, it’s available to use when it’s accepted by the service provider. The service provider can configure the service to accept requests automatically or manually.
  • Security groups and endpoint policies are not supported.
  • Endpoints support IPv4 traffic only.
  • You cannot transfer an endpoint from one VPC to another, or from one service to another.

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