In Integration Hub, Triggers and Actions are different parts of your integration.
Triggers are the product where the integration initiates. When something happens in your trigger product, Integration Hub will then facilitate the integration.
Actions are the product/application affected by the integration’s action.
Here’s an example: Let’s say I had a simple integration set up between my Web Central (formerly CivicEngage Central) website and Mass Notification (formerly CivicReady). This integration is configured so that when a notification is sent through Mass Notification, the Alert Center banner is activated in Web Centrall. In this example, Mass Notification is the Trigger and Web Central is the Action.