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

# Customer events

> Learn what events  are in Masivo.

Events are the actions that your customers take that trigger certain campaigns of type behavior. For example, a purchase, filling out a survey, or signing up to your platform. You can send any event you would like. Masivo will track the event and apply the rules you set to distribute the rewards. Only matching events will trigger certain campaigns.

When a customer submits a [review](/concepts/review-forms) through the Storefront API, Masivo creates a resolved **`REVIEW`** event linked to that submission. Use it to track feedback alongside purchases and other behavior events.