CORS and S3 Simply Explained (The Theory) | Cross-Origin Resource Sharing | AWS Training
Amazon’s Simple Storage Service (S3) can be used to host static websites (check out this video for more: • AWS Project: How to Create a Static W... ). But as you’re building your website, you might come across problems with Cross-Origin Resource Sharing, or CORS. CORS defines how you share resources across domains.
In this video, I explain CORS with a real-world analogy for how we communicate with other people, then review what makes up a “domain.” From there, I walk through an S3-specific example, showing how an HTML page in one S3 bucket can interview with an HTML page in a second bucket.
If you want to check out hands-on demo for how to implement this in S3, check out this video: • Enabling CORS on an S3 Bucket in AWS ... .
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00:00 – What is cross-origin resource sharing or CORS?
00:38 – A simple analogy of CORS in the real world
01:01 – Understanding the different parts of a domain
01:27 – What does it mean to be cross-origin?
02:13 – CORS is enforced by the browser (not AWS)
02:38 – Walking through an example of CORS with Amazon S3 buckets
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