A custom module is a type of software module created specifically for a Drupal website. It is a collection of code written in the PHP programming language that adds new features and functionality to a Drupal website. Custom modules are used to extend the capabilities of Drupal beyond what is available in the core software.
Custom modules are created by developers to meet the specific needs of a website. They can be used to add new features, modify existing features, or even replace existing features. Custom modules can also be used to integrate with third-party services, such as payment gateways or social media platforms.
Custom modules are stored in the “modules” folder of a Drupal website. They are written in the same way as core modules, but they are not part of the core software. Custom modules must be installed and enabled in order to be used.
Custom modules are a powerful way to extend the capabilities of a Drupal website. They can be used to create unique features and functionality that are not available in the core software. However, custom modules can also be complex and difficult to maintain. It is important to ensure that custom modules are well-written and properly tested before they are used on a live website.