If you are a developer, you may have always wished to have live notifications system like Facebook on your web application or website. As of now, while writing this tutorial there is no extension available to add such notifications in your Joomla website.
In current internet world when the timing of latest information is very important to flow between news service/websites/application and the users, various techniques are used like sending emails to users, sending SMS, RSS Feeds or searching the information on search engines.
When Joomla introduced the Custom fields in 2012 starting from version 3.7, it shifted the focus of blogging experience from monotonous to attractive manner being capable of data display attributes in seamless integration in front-end.
Sometimes there is a situation where you want to show some modules on categories only and some modules on blog detail page only. To achieve this developers used to custom code heavily on index.php to achieve the results.
Most people still doubt the application building capabilities of Joomla CMS. Since inception, Joomla always kept its CMS programming on MVC and facilitated many 3rd party application building extensions to run smoothly and enjoy the Joomla ACL to maximum extent.