When working with Zend Framework, is it more appropriate to categorize a script as a service or a controller?

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It depends on the functionality of the script. If the script serves as an endpoint for handling requests from clients and returning responses, it should be categorized as a controller. On the other hand, if the script is responsible for performing specific business logic and providing functionality to the entire application, it should be categorized as a service. Ultimately, the categorization should reflect the purpose and functionality of the script in the application.