AWS PrivateLink Integration with Appian Cloud

This page applies to Appian Cloud only. It may not reflect the differences with Appian Government Cloud.

Overview

Customers of Appian Cloud can use AWS PrivateLink to enable secure communication between their Appian Cloud environments and AWS resources hosted on their private networks. PrivateLink can be used to integrate with your services such as business data sources or authentication systems through your own AWS Virtual Private Cloud (VPC). PrivateLink can also be used to expose an Appian Cloud environment to your VPC.

This integration option is an alternative to VPN Tunnels for customers who have IT infrastructure running on AWS.

Benefits

PrivateLink connectivity gives you several benefits, including, but not limited to:

  • Enhanced security: Traffic over PrivateLink is kept within the AWS network and does not traverse the public Internet. Additional, any created PrivateLink resources are locked down within Appian Cloud to only be accessible to your Appian environments. Access will default to a single environment, but you may have your other environments added to created VPC Endpoints upon request.
  • Simplified access to your resources: Appian Cloud environments with multiple application servers (e.g. High-Availability) can use a single PrivateLink connection regardless of the number of nodes.
  • Reduced network configuration complexity: PrivateLink removes the need to rely on allowing a public IP on your network's edge firewalls. Additionally, you will not face conflicts with Appian's private network IP address spaces since connections through PrivateLink are performed through an endpoint service.

This integration option allows an Appian Cloud environment to communicate with resources inside your managed VPC, where the operation is initiated by the Appian Cloud environment. For example, the Appian Cloud environment querying an RDBMS hosted in your VPC.

In this configuration, Appian Cloud acts as the service consumer and your VPC acts as the service provider. See Access Your VPC using AWS PrivateLink for more details.

Access to your Appian Cloud environment from an AWS VPC

This integration option allows resources within your VPC to communicate directly with an Appian Cloud environment. For example, data management tools hosted in your VPC querying the business database hosted on the Appian Cloud environment using Enhanced Data Pipeline.

In this configuration, the Appian Cloud environment is the service provider and your VPC is the service consumer. See Access an Appian Cloud Environment Using AWS PrivateLink for more details.

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