What is the Use of Queue in Salesforce?

Hi,

Queues help your teams manage leads, cases, service contracts, and custom objects. Once records are placed in a queue manually or through an automatic case or lead assignment rule, records remain there until they're assigned to a user or taken by one of the queue members. Any queue member or users above them in the role hierarchy can take ownership of records in a queue. For example:

Lead queues Help you manage the distribution of leads. For example, you may have a lead queue for a Western Region team and one for an Eastern Region team. You can put leads in different queues, either manually or automatically via a lead assignment rule as leads are imported, created or edited manually, or captured from the Web. Make salespeople members of one or more lead queues.