AWS Shield is a managed Distributed Denial of Service (DDoS) protection service offered by Amazon Web Services (AWS). It is designed to help protect AWS customers' applications and websites against DDoS attacks, which are malicious attempts to overwhelm a target system or network with a flood of incoming traffic.

AWS Shield provides both standard and advanced levels of protection. AWS Shield Standard is automatically included at no additional cost for all AWS customers. It offers protection against common and most frequently observed DDoS attacks. It utilizes various techniques such as traffic engineering, anomaly detection, and rate limiting to mitigate the impact of DDoS attacks and ensure the availability of AWS resources.

For customers who require enhanced protection and additional customization options, AWS Shield Advanced is available as a subscription-based service. It provides more comprehensive DDoS protection, advanced threat intelligence, and access to a dedicated team of AWS DDoS experts called the AWS DDoS Response Team (DRT). AWS Shield Advanced also offers features like real-time attack visibility and detailed attack metrics, allowing customers to monitor and analyze DDoS attacks on their applications.

AWS Shield operates at the edge locations of the AWS global network, providing protection close to the target applications or websites. It automatically scales its defenses based on the observed traffic patterns, ensuring that applications remain available even during high-volume DDoS attacks. By obtaining AWS Certification Course, you can advance your career in AWS. With this course, you can demonstrate your expertise in the basics of preparing for the AWS Certified Solutions Architect - Associate exam SAA-C03, many more fundamental concepts, and many more critical concepts among others.

By leveraging AWS Shield, customers can benefit from the expertise and infrastructure of AWS to safeguard their applications against DDoS attacks. It helps protect the availability and performance of applications, preventing potential disruptions and financial losses that can occur due to DDoS attacks. AWS Shield allows customers to focus on their core business without worrying about the complexities of DDoS protection, as AWS handles the mitigation of attacks and the ongoing monitoring of traffic patterns.