How to choose an activation metric for a product?

Choosing an activation metric for a product depends on what key user action reflects successful engagement and product value. To select the right metric, you should:

1. Define what "activation" means for your product — it could be the first successful use, performing a key action, or achieving a certain result.
2. The metric should be measurable and unambiguous, for example, the number of users who completed registration and performed the first action.
3. Ensure that the metric reflects value for the user and business goals.
4. Example: for a messenger, activation is sending the first message; for a SaaS service, it is creating the first project or report.

It is important that the chosen metric is understandable to the team and can serve as a guide for improving the product and user experience.