In information technology , a notification system is a combination of software and hardware That Provides a moyen de Delivering a Message to a set of containers.  It commonly shows activities related to an account.  Such systems constitute an important aspect of modern Web applications. 
For example, a notification system can send an e-mail announcement when a computer network will be down for a scheduled maintenance.
The complexity of the system may vary. Complicated notification systems are used by businesses to reach whenever necessary critical employees.  Emergency notification systems may take advantage of modern information technologies. Governments use them to inform people of upcoming danger. 
- ^ Jump up to:a b c “What Is a Notification System?” . WiseGEEK . Retrieved 2016-02-24 .
- Jump up^ “Tutorial: building a notification feed” . Stream Framework (previously Feedly) . Retrieved 2016-02-24 .
- Jump up^ PHILIP BROWN (2015-01-19). “Modeling a Notification System in PHP” . Culttt.com. Archived from the original (HTML) on 2015-01-19 . Retrieved 2016-02-24 .