What does a 1-day view and 28-day click attribution window mean?

About attribution windows

The number of days between when a person viewed or clicked your ad and then subsequently took an action is called an attribution window. We report off ad actions based on views of your ad and clicks on your ad:

Clicks: A person clicked your ad and took an action. This is called click-through attribution.

Views: A person saw your ad, didn't click it, but took an action within the attribution window. This is called view-through attribution.

By default, your attribution window is set to 1-day view and 28-day click, which means you see actions that happened 1 day after someone viewed your ad and up to 28 days after someone clicked your ad. You can change the attribution window to show 1-day, 7-day and 28-day view and click attribution.