# Activation

An activation applies a privilege (and optionally a notification) to many passes. Use activations for campaigns and scheduled rollouts.

### What an activation contains

1. **Segmentation**: which passes are targeted.
2. **Trigger**: when the activation runs.
3. **Configuration**: what is applied (privilege + optional notification).

### How it differs from a Privilege

A [Privilege](https://docs.thewalletcrew.io/engage-and-animate/privilege-and-activation/broken-reference) is the object stored on a pass. An activation is the “batch mechanism” that creates or updates privileges at scale.

### Execution model (high level)

* When the trigger fires, the platform resolves the segment into pass ids.
* The platform applies the configured privilege to each pass.
* Each updated pass is pushed to Apple/Google via the usual update pipeline.

{% hint style="info" %}
Use an activation when you need repeatable logic. Use the privilege API when you target a single pass.
{% endhint %}