What are they?

Triggers are Zaps that generally allow you to take listen for an event that you want to take action from. For example, Job Updated , or Inspection Checklist Created-- these are events (updated, created) that you can you to trigger another action that supports a business goal. Triggers usually respond with some data you can then use in an action, for example, "When a job is completed (<- this is the trigger), download the measurements PDF (<- this is the action)". Triggers support taking action.