How AWS Shield works - AWS WAF, AWS Firewall Manager, and AWS Shield Advanced

How AWS Shield works

A distributed denial of service (DDoS) attack is an attack in which multiple compromised systems attempt to flood a target, such as a network or web application, with traffic. A DDoS attack can prevent legitimate users from accessing a service and can cause the system to crash due to the overwhelming traffic volume.

AWS provides two levels of protection against DDoS attacks: AWS Shield Standard and AWS Shield Advanced.