# Architecture

The diagram below illustrates how each cell in InputTables sources data from multiple, distinct data sources to enable integrated data visualization across the sheet.

* The orange data is the original dataset. In this example an Excel with SuperStore data.
* The green data is the schema created with InputTables. This data is stored safely in WriteBackExtreme.
* Data from WriteBackExtreme is left-joined to the original dataset when loading SuperTables.

{% hint style="success" %}
InputTables **never** overwrites your existing data.
{% endhint %}

<figure><img src="/files/JaZnG7pBM9JGrmpSW2gH" alt=""><figcaption></figcaption></figure>

## System architecture

For InputTables we have two ways of hosting this solution. On premise and Cloud/SaaS

### On Premise

<figure><img src="/files/aGoJybkF192oOieraku0" alt=""><figcaption></figcaption></figure>

### Cloud/SaaS

<figure><img src="/files/4qX4Lvc7bgYVP2jxDg0C" alt=""><figcaption></figcaption></figure>


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