When you need to override a core class in Magento 2, you can handle this by using Preference or Plugin.


In Magento 2, Preference extends a core class. It can rewrite function. When you declare a Preference, your new class is expected to be a complete implementation of the class you want to override.

While a plugin allows you to execute your functions before, after or around (before & after) the core function is executed. It's NOT really rewritten function like Preference.

For more information: https://store.magenest.com/blog/how-to-override-core-class-magento-2/