# Developer Guide

In this section, you will find the description of both API and SDK components of Oz Forensics Liveness and face biometric system. API is the backend component of the system, it is needed for all the system modules to interact with each other. SDK is the frontend component that is used to:

1\) take videos or images which are then processed via API,

2\) display results.

We provide two versions of API.

With full version, we provide you with all functionality of Oz API.

{% content-ref url="developer-guide/api/oz-api" %}
[oz-api](https://doc.ozforensics.com/oz-knowledge/guides/developer-guide/api/oz-api)
{% endcontent-ref %}

The Lite version is a simple and lightweight version with only the necessary functions included.

{% content-ref url="developer-guide/api/oz-api-lite" %}
[oz-api-lite](https://doc.ozforensics.com/oz-knowledge/guides/developer-guide/api/oz-api-lite)
{% endcontent-ref %}

The SDK component consists of web SDK and mobile SDK.

Web SDK is a plugin that you can embed into your website page and the adapter for this plugin.

{% content-ref url="developer-guide/sdk/oz-liveness-websdk" %}
[oz-liveness-websdk](https://doc.ozforensics.com/oz-knowledge/guides/developer-guide/sdk/oz-liveness-websdk)
{% endcontent-ref %}

Mobile SDK is SDK for iOS and Android.

{% content-ref url="developer-guide/sdk/oz-mobile-sdk/ios" %}
[ios](https://doc.ozforensics.com/oz-knowledge/guides/developer-guide/sdk/oz-mobile-sdk/ios)
{% endcontent-ref %}

{% content-ref url="developer-guide/sdk/oz-mobile-sdk/android" %}
[android](https://doc.ozforensics.com/oz-knowledge/guides/developer-guide/sdk/oz-mobile-sdk/android)
{% endcontent-ref %}


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