Explain the concept of Symfony services.

Answer: Symfony services are reusable PHP objects that perform specific tasks or functionalities within a Symfony application. They are managed by the Symfony Service Container, which handles their instantiation, configuration, and dependencies. By defining services, developers can promote code reusability, maintainability, and separation of concerns, allowing different parts of the application to interact through well-defined interfaces. Services can be configured using YAML, XML, or PHP, making them highly customizable and easily injectable into controllers or other services.

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