About route when calling external API

Although it may be an elementary question, please understand.

When the Resin OS device calls an external API, what is the route? Does the request reach the target server via the Resin IO as a proxy? Or will it go directly to the target server?

I’m not good at English, so I’m sorry if my sentence is difficult to understand.

If you are using external APIs your application will reach the target server directly. You may put your device behind a proxy as well: https://docs.resin.io/reference/OS/network/2.x/#connecting-behind-a-proxy

I understand. Thank you for your response.