# FAQ
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This section provides answers to frequently asked questions about integrating third-party services in the AWS Cloud.

## Is there a preferred architecture?
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No, you should select an architecture according to your integration requirements.

## How do I integrate with a third-party service that exists outside the AWS Cloud?
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In this case, the architectures in this guide are not applicable. You must establish connectivity using different mechanisms, for example, using AWS Site-to-Site VPN.

## Can I combine architectures together?
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Yes, you can. For example, you could use an AWS Transit Gateway peering architecture for the majority of your VPCs and use VPC peering for specific VPCs.