Cross-origin resource sharing (CORS) defines a way for client web applications that are loaded in one domain to interact with resources in a different domain. With CORS support, you can build rich client-side web applications with Amazon S3 and selectively allow cross-origin access to your Amazon S3 resources.

借助 CORS 支持，您可以使用 Amazon S3 构建各种富客户端 Web 应用程序，并选择性地允许跨源访问您的 Amazon S3 资源。 本部分提供 CORS 概述。 副主题介绍如何通过使用 Amazon S3 控制台或通过以编程方式使用 Amazon S3 REST API 和 AWS SDK 来启用 CORS。

If your request doesn't specify an Origin header, S3 won't include the CORS headers in the response. This really threw me because I kept trying to curl the files to test the CORS but curl doesn't include Origin.

This section explains how to use the Amazon S3 console to add a cross-origin resource sharing (CORS) configuration to an S3 bucket. When you enable CORS on the bucket, the access control lists (ACLs) and other access permission policies continue to apply.

2. 如果请求返回错误，请验证是否在桶上设置了 CORS 配置。 请确保已将所需方法添加到桶上的 CORS 规则中。 如果设置了 CORS 配置，则您将在 S3 控制台中桶的 权限 部分看到编辑 CORS 配置的选项。

2025年1月10日 · Let’s understand why there is a need for cors in s3 Amazon S3 stores static assets like images, videos, and other files that web applications often need to fetch and display on the client side.

文章浏览阅读3.4k次。 Amazon 亚马逊 AWS S3 跨源资源共享 （CORS）设置跨源资源共享：使用案例场景方案 1方案 2AllowedMethod 元素AllowedOrigin 元素AllowedHeader 元素ExposeHeader 元素MaxAgeSeconds 元素Amazon S3 如何评估针对存储桶的 CORS 配置？

2023年12月29日 · Amazon S3 (Simple Storage Service)是一项强大的 对象存储服务，而跨域资源共享 (CORS)是为了在 Web 应用中安全实现跨域数据传输而设计的标准。 在本文中，我们将深入探讨如何在 Amazon S3 上实战配置 CORS，确保安全地处理跨域请求。 1. CORS 概述 1.1 同源策 …

So, you can control cross-origin access to your APIs and resources hosted on Amazon Web Services (AWS). Here are some AWS services with CORS support: Amazon Simple Storage Service (Amazon S3) is an object storage service with cost-effective storage classes for all data storage use cases.

How do I configure CORS in Amazon S3 and confirm the CORS rules using cURL?