A worker or worker service is a service that hosts the Workflow and Activity implementations. The worker polls the Temporal service for tasks, performs those tasks, and communicates task execution results back to the Temporal service. Worker services are developed, deployed, and operated by Temporal customers.
You can run a Temporal worker in a new or an existing service. Use the framework APIs to start the Temporal worker and link in all Activity and Workflow implementations that you require the service to execute.