**What is the Deregistration delay in AWS?**
In AWS, the "Deregistration Delay" refers to the time that an Elastic Load Balancer (ELB) waits before deregistering an instance after it stops receiving traffic. This delay is intended to prevent the premature removal of an instance from the load balancer's pool in case it becomes temporarily unavailable or unresponsive due to network fluctuations or other issues.