# Real time user tracking

Online tracking aims at giving the ability to track unique users across digital properties. We support the following integrations in real time:

* [Website tracking](/data-streams/data-ingestion/real-time-user-tracking/web-events.md)
* [Application tracking](/data-streams/data-ingestion/real-time-user-tracking/application-tracking.md)
* [API tracking](/data-streams/data-ingestion/real-time-user-tracking/api.md)
* [Conversion tracking](/data-streams/data-ingestion/real-time-user-tracking/conversions.md)
* [AMP tracking](/data-streams/data-ingestion/real-time-user-tracking/amp.md)
* [Email tracking](/data-streams/data-ingestion/real-time-user-tracking/email-views-and-clicks.md)
* [Display campaign tracking](/data-streams/data-ingestion/real-time-user-tracking/ads-exposure.md)

{% hint style="success" %}
Use this feature if you want to track in real time what your users are doing on your digital touch points. 
{% endhint %}

{% hint style="danger" %}
If your need is to mass import activities, users or CRM profiles, you should consider [Bulk Imports](/data-streams/data-ingestion/bulk-processing.md).
{% endhint %}

## User activities and events

With real-time user tracking, **you send user events** to mediarithmics that are **aggregated and encapsulated into** [**user activities**](/user-points/user-activities.md). Some user activities only have one user event, while others can have multiple events. 

{% content-ref url="/pages/-MNSuS1g6Npcklh14qQu" %}
[UserActivity & UserEvent](/user-points/user-activities.md)
{% endcontent-ref %}

For example, when you send hits from the JS Tag on a web site, mediarithmics aggregates all the events into sessions, creating one user activity per session.

![](/files/-MPDyxIKz1SJnxObE-dL)

## Session aggregation

If registering a visit as `IN_SESSION`, the visit will go through the **session aggregation** step. We aggregate visits in sessions based on the provided identifiers. We close sessions after 30 minutes of inactivity or if a new event is recorded with a referrer from a different domain than the previously recorded. Visits registered as `LIVE` don't create sessions.

## The processing pipeline

When using the real-time tracking capability of mediarithmics, you enter what is called the **User Activity Processing Pipeline**. It allows mediarithmics to do some processing on your behalf.

![](/files/-MPE4kxzJamGadf4sftT)

Here are the steps of processing, in order :

1. At session closing or every minute if events are `live`, creation of a user activity.
2. Execution of [**event rules**](/data-streams/data-ingestion/real-time-user-tracking/event-rules.md). They allow you to edit the events in the activity and add new ones based on their shapes. 
3. Application of the [**activity analyzer.**](/data-streams/data-ingestion/real-time-user-tracking/activity-analyzers.md) It is a plugin allowing you to execute code to transform each activity.
4. Detection of **query-based conversions**. Conversions relying on pixels skip this step.
5. Evaluation of **automations triggers "React to an event"**. If the ongoing activity matches the trigger, the UserPoint enters the scenario.
6. [**UserChoice**](/advanced-usages/data-privacy-compliance/user-choices.md) management ensures the data you ingest is compatible with GDPR and other regulations.

 The activity is finally stored.


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