> For the complete documentation index, see [llms.txt](https://docs.traces.cloud/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.traces.cloud/faf-api/how-to-connect.md).

# How to Connect

Traces offers multiple connection interfaces that can be built on top of the same REST API.

![Document image](https://archbee.imgix.net/bLFGjdFdIY6MzXs3Kd3G8/phTrl5B_C_RpOrDWwpXKF_how-to-connect.png?auto=format\&ixlib=react-9.1.1\&h=360\&w=514)

## App <a href="#nb-app" id="nb-app"></a>

Build web, mobile, backend applications and interact with our [API](/faf-api/api.md) using your favorite programming language. We are using predictable resource-oriented URLs, JSON-encoded responses, standard [HTTP response codes](https://docs.traces.cloud/api-reference#un-http-response-codes), and key-based authentication.

## VMS and NVR <a href="#ru-vms-and-nvr" id="ru-vms-and-nvr"></a>

Connections are possible through custom integration, native Traces plugins, or other means provided by the VMS/NVR manufacturers.

## SMTP gateway <a href="#mn-smtp-gateway" id="mn-smtp-gateway"></a>

The standard function of most cameras and NVRs is to send an email alert when certain types of events occur. Also known as SMTP push mail notification. Traces SMTP gateway receives an email alert, classify the source and forward the results to your system.

## EDGE Appliance <a href="#h-edge-appliance" id="h-edge-appliance"></a>

Similar to VMS/NVR integration there are multiple means of connecting your cameras to Traces API through EDGE Appliance.&#x20;

{% hint style="success" %}

### What option is right for you?

Talk to our Customer Success Engineers to get the most out of our technology or refer to this quick guide to learn more about every option.
{% endhint %}