# Security in S3 on Outposts
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Cloud security at Amazon is the highest priority. As an Amazon customer, you benefit from data centers and network architectures that are built to meet the requirements of the most security-sensitive organizations.

Security is a shared responsibility between Amazon and you. The [shared responsibility model](https://aws.amazon.com/compliance/shared-responsibility-model/) describes this as security *of* the cloud and security *in* the cloud:
+ **Security of the cloud** – Amazon is responsible for protecting the infrastructure that runs Amazon Web Services services in the Amazon Web Services Cloud. Amazon also provides you with services that you can use securely. Third-party auditors regularly test and verify the effectiveness of our security as part of the [Amazon Compliance Programs](https://aws.amazon.com/compliance/programs/). To learn about the compliance programs that apply to Amazon S3 on Outposts, see [Amazon Services in Scope by Compliance Program](https://aws.amazon.com/compliance/services-in-scope/).
+ **Security in the cloud** – Your responsibility is determined by the Amazon Web Services service that you use. You are also responsible for other factors including the sensitivity of your data, your company's requirements, and applicable laws and regulations. 

This documentation helps you understand how to apply the shared responsibility model when using S3 on Outposts. The following topics show you how to configure S3 on Outposts to meet your security and compliance objectives. You also learn how to use other Amazon Web Services services that help you to monitor and secure your S3 on Outposts resources. 

**Topics**
+ [Setting up IAM with S3 on Outposts](S3OutpostsIAM.md)
+ [Data encryption in S3 on Outposts](s3-outposts-data-encryption.md)
+ [Amazon PrivateLink for S3 on Outposts](s3-outposts-privatelink-interface-endpoints.md)
+ [Amazon Signature Version 4 (SigV4) authentication-specific policy keys](s3-outposts-bucket-policy-s3-sigv4-conditions.md)
+ [Amazon managed policies for Amazon S3 on Outposts](s3-outposts-aws-manpol.md)
+ [Using service-linked roles for Amazon S3 on Outposts](S3OutpostsServiceLinkedRoles.md)