# Shield

* AWS provides Shield Standard and Shield Advanced for **protection against DDoS attacks**.

## Shield Standard (Free)

* Shield Standard **defends against the most common, frequently occurring network and transport layer DDoS attacks** that target your website or applications.\\

* While Shield Standard helps protect all AWS customers, you get **particular benefit if you are using CloudFront and Route 53**.\\

* These services receive **comprehensive availability protection against all known infrastructure (Layer 3 and 4) attacks**.

## Shield Advanced ($3000 per month)

* **For higher levels of protection against attacks**, you can subscribe to AWS Shield Advanced.\\

* When you subscribe to Shield Advanced and add specific resources to be protected, Shield Advanced provides **expanded DDoS attack protection for web applications running on the resources**.\\

* As an Shield Advanced customer, you can **contact the 24x7 AWS DDoS Response Team (DRT) for assistance during a DDoS attack**.\\

* If you experience a DDoS attack that increases utilization of an **Shield Advanced protected resource**, you can **request a credit for charges related to the increased utilization** to the extent that it is not mitigated by Shield Advanced.\\

* Shield Advanced includes intelligent **DDoS attack detection and mitigation for not only for network layer (layer 3) and transport layer (layer 4) attacks, but also for application layer (layer 7) attacks**.
