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

# Experiments

> Create reusable experiments in Analytics and use them in Workflows

<img src="https://mintcdn.com/reelevant/96oT6X8zICc3QIdn/images/analytics/experiments-listing.png?fit=max&auto=format&n=96oT6X8zICc3QIdn&q=85&s=bb26cf50266e8170166cb070ae85f336" alt="Experiments listing with experiment names, statuses, types, periods, traffic allocations, and last updates" width="3136" height="1986" data-path="images/analytics/experiments-listing.png" />

Experiments help you compare Variants across Workflows and measure their impact in Analytics.

An [Experiment](/glossary) is created and managed in Analytics, then reused by Workflows through the Experiment Node. It has a type, [Variants](/glossary), an [Allocation](/glossary) for each Variant, a [Control](/glossary) or [Reference](/glossary), a business hypothesis, and a success metric.

## Availability

Experiments are activated on request: contact your Reelevant contact.

## Experiment types

<img src="https://mintcdn.com/reelevant/96oT6X8zICc3QIdn/images/analytics/experiment-type-picker.png?fit=max&auto=format&n=96oT6X8zICc3QIdn&q=85&s=658d0654ac86e2460f2ba8756dd0a71a" alt="Experiment type picker showing Global holdout and Continuous A/B test objectives" width="3136" height="1986" data-path="images/analytics/experiment-type-picker.png" />

| Type | Objective | Variants | **Randomization unit** | End |
| - | - | - | - | - |
| **Global holdout** | **Measure incremental impact** | Exactly two: **Control** and [**Treatment**](/glossary) | Always **Per customer** | No automatic end; you can conclude it manually. |
| **Continuous A/B test** | **Compare variants** | Two to four, including a **Reference** | **Per customer** or **Per display** | Conclude it when you choose. |

A **Global holdout** keeps part of your audience on the non-personalised experience. This helps you measure the value personalisation adds.

## Experiments listing

Open **Analytics** and select **Experiments** to see your experiments.

| Column | What it shows |
| - | - |
| **Name** | The experiment name. |
| **Status** | Where the experiment is in its lifecycle. |
| **Type** | **Global holdout** or **Continuous A/B test**. |
| **Period** | The experiment's start and end information. |
| **Traffic allocation** | The configured share for each variant. |
| **Last update** | When the experiment was last changed. |

Select **Show archived** to include archived experiments. Select **Create experiment** to begin.

## Create an experiment

<img src="https://mintcdn.com/reelevant/96oT6X8zICc3QIdn/images/analytics/experiment-configuration.png?fit=max&auto=format&n=96oT6X8zICc3QIdn&q=85&s=1dada951ac2821fb7411d28d6b2d4652" alt="Experiment configuration showing General, Variants and allocation, and Measurement sections" width="3136" height="1986" data-path="images/analytics/experiment-configuration.png" />

1. In the Experiments listing, select **Create experiment**.
2. Under **What is your objective?**, choose **Measure incremental impact** or **Compare variants**.
3. In **General**, enter a **Name** and **Business hypothesis**.
4. In **Variants and allocation**, name your Variants and set their Allocation.
5. In **Measurement**, choose a **Randomization unit** and one **Success metric**.
6. Select **Create experiment** to validate it as Ready, or **Save draft** to finish later.

Your **Name** must not match an existing tag name because the Experiment becomes a tag.

Select **Split evenly** to divide traffic evenly between the other Variants. The **Control** or **Reference** Allocation is calculated automatically, keeping the total at 100%.

Before an Experiment starts, its **Control** or **Reference** receives all traffic.

Choose **Per customer** to keep each customer in the same Variant. Choose **Per display** to assign a Variant each time Content is displayed.

Choose one **Success metric**: **Unique conversion rate**, **Unique click rate**, **Revenue per customer**, or **Purchases per customer**. With **Per display**, only **Unique click rate** is available.

<Tip>
  You can attach a **Ready** Experiment to a Workflow before starting it. An Experiment used by no Workflow receives no traffic.
</Tip>

## Lifecycle

<img src="https://mintcdn.com/reelevant/96oT6X8zICc3QIdn/images/analytics/experiment-page.png?fit=max&auto=format&n=96oT6X8zICc3QIdn&q=85&s=027ef496635e32e2bba3ce4511384ee6" alt="Experiment page showing its status, configuration, and traffic allocation" width="3136" height="1986" data-path="images/analytics/experiment-page.png" />

| Status | What it means |
| - | - |
| **Draft** | You can continue editing the Experiment. |
| **Ready** | The configuration is validated and can be attached to a Workflow. |
| **Live** | The Experiment is running and allocating traffic. |
| **Decided** | A Variant was chosen to receive all traffic. |
| **Archived** | The Experiment is archived and hidden from the active listing. |

### Validate or return to draft

Select **Validate configuration** to move a draft to Ready.

Select **Back to draft** to return a Ready Experiment to Draft.

Detach the Experiment from its Workflows before moving it back to Draft.

While a Draft or Ready Experiment is used by a Workflow, you cannot add or remove Variants. Everything else stays editable until you start it.

### Start

Select **Start** to begin the Experiment manually. Starting locks its Variants, Allocation, Randomization unit, and Success metric.

If no Workflow uses the Experiment, a warning appears. The Experiment receives no traffic until a Workflow uses it.

### Conclude

<img src="https://mintcdn.com/reelevant/96oT6X8zICc3QIdn/images/analytics/experiment-conclude.png?fit=max&auto=format&n=96oT6X8zICc3QIdn&q=85&s=ad0df4321237654f88d081eec85e79af" alt="Conclude experiment modal with the Variant to keep option" width="3136" height="1986" data-path="images/analytics/experiment-conclude.png" />

The **Conclude experiment** modal offers **Variant to keep** radio options.

Choose a Variant, then select **Conclude**.

All traffic then goes to that Variant, and the Experiment becomes Decided.

A **Global holdout** has no automatic end date, but you can conclude it manually. You cannot stop a **Live** Experiment without choosing a Variant to keep.

<Warning>
  Concluding is irreversible. The Experiment stops collecting data and cannot be restarted.
</Warning>

### Archive

Select **More actions** > **Archive**, then type the confirmation word.

<Warning>
  Detach the Experiment from all Workflows first. **Archive** is not available while it is **Live**.
</Warning>

### Clone

Select **Clone** to create a new draft named with “(copy)”.

## Read experiment data

The Experiment page shows **Results dashboard coming soon**.

Meanwhile, open [Data Exploration](/product-guide/analytics/data-exploration). Your Experiment appears as a tag named after it, with one value for each Variant.

Add **Tag: {name}** as a dimension to compare Variants. See [Measures and Dimensions](/product-guide/analytics/measures-and-dimensions) for help choosing fields.

These figures are not statistically validated.

## Coming soon

The results dashboard and statistical significance are coming soon. Scheduled start and automatic end dates are also coming soon.

## What's Next?

<CardGroup cols={3}>
  <Card title="Experiment Node" icon="flask" href="/product-guide/workflows/logic-nodes/experiment">
    Use an Experiment in a Workflow.
  </Card>

  <Card title="Data Exploration" icon="chart-pie" href="/product-guide/analytics/data-exploration">
    Explore your analytics data.
  </Card>

  <Card title="Logic Nodes" icon="code-branch" href="/product-guide/workflows/logic-nodes">
    Learn about Workflow Logic Nodes.
  </Card>
</CardGroup>
