AWS Shield is designed specifically to protect internet-facing applications from Distributed Denial of Service (DDoS) attacks. By providing always-on detection and automatic response to common infrastructure layer (layer 3 and 4) attacks, AWS Shield maintains the availability of an application during such incidents. Amazon GuardDuty is a threat detection service that continuously monitors for malicious activity and unauthorized behavior, AWS WAF is a web application firewall that helps protect web applications from common web exploits, and Amazon Inspector is an automated security assessment service that helps improve the security and compliance of applications on EC2 instances. Of these options, only AWS Shield is specifically focused on DDoS protection.
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What are Distributed Denial of Service (DDoS) attacks?
How does AWS Shield differ from AWS WAF?
Can AWS Shield protect against all types of cyber attacks?