> ## Documentation Index
> Fetch the complete documentation index at: https://docs.activeviam.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Atoti Overview

> Already familiar with Atoti ? [Check what's new in this version.](../release/whats_new)

Atoti is an in-memory aggregation and calculation framework.
It lets you explore metrics across hundreds of dimensions,
analyze live data at its most granular level and perform what-if simulations at unparalleled speed.

<Frame>
  <img src="https://mintcdn.com/activeviam/BMcocOvP5XUT7ATP/engine/java-sdk/6.0-sb3/assets/intro/atoti-overview.png?fit=max&auto=format&n=BMcocOvP5XUT7ATP&q=85&s=37f1f84105179ce3d7f03531844793e0" alt="Atoti Global Picture" width="906" height="864" data-path="engine/java-sdk/6.0-sb3/assets/intro/atoti-overview.png" />
</Frame>

Data can be [loaded](../datastore/dataloading_overview) in a relational format in the datastore,
with a full ETL process allowing different data sources and providing simple to complex transformation capabilities.
Data is then aggregated, and complex computations and analytics can be performed in the [Atoti cube](../cube/overview).
It can also directly be queried from an external database system, without needing an ETL process and data loading.
See the [Direct Query section](../directquery/getting_started).

Atoti Server can be queried through different front ends.
Our dedicated front end, Atoti UI, allows for real-time graphical visualization of the changes in the data.
It is also compatible with multiple commercial [front ends](../querying/front_ends).

> Don't know where to start ? See our [Getting Started](../start/getting_started_overview) section.