Description: Application Job is the base class for all jobs in a Ruby application, inheriting from Active Job. This class provides a unified interface for executing background jobs, allowing developers to define tasks that can be run asynchronously. By using Application Job, developers can leverage the framework’s ability to manage job queues, facilitating the execution of resource-intensive or time-consuming tasks, such as sending emails, generating reports, or integrating with external APIs. The structure of Application Job allows for customization and configuration of jobs, including the ability to set priorities, schedule tasks, and effectively handle errors. Additionally, its integration with Active Job enables developers to use different queue adapters, such as Sidekiq, Resque, or Delayed Job, providing flexibility in choosing the backend technology for job management. In summary, Application Job is an essential tool in the Ruby ecosystem that optimizes the execution of background tasks and enhances the overall efficiency of web applications.