Incident Management is to resolve any incidents causing an interruption of service in the quickest and most effective way possible
Triggers
Triggers are business rules you define that run immediately after tickets are created or updated.
Using triggers, you can automatically assign a incident or request to a specific support agent or support group based on the email address it was sent to.
Triggers contain conditions and actions. You combine these to create ‘if’ and ‘then’ statements.
You build condition and action statements using ticket properties, field operators, and the ticket property values.
Notifications
Notifications are similar to triggers, because both define conditions and actions that modify ticket properties and optionally send email notifications to customers and the support staff.
They differ at automations run when a time event occurs after a ticket property was set or updated, rather than immediately after a ticket is created or updated.
Only administrators can create and manage automations.
Automations help you to manage the workflow and measure performance because they can alert you to tickets that remain unresolved and need to be escalated.
Effective incident management do not disrupt business operations
Triggers 
Notifications