This section introduces the process of enabling S3 CORS applying CORS configuration with your S3 buckets and checking if it works uploading a sample JSON code.
You do not have to request permissions to enable S3 CORS. All you need to do is:
Sign up on AWS and access S3 with your IAM credentials
Launch an EC2 instance and start the web server
First, we configure the CORS configuration to the S3 bucket through the S3 console, and verify that the CORS configuration is applied by putting a JSON file in your S3 bucket and an HTML file in a web server on the EC2 instance. The JSON file named test.json holds sample data (id, email, and username) in the JSON format. The HTML file named index.html uses JavaScript and retrieves the sample data by sending XMLHttpRequest to the JSON file:
Sign in to the AWS management console and move to the S3 console at https://console.aws.amazon.com/s3.
In the S3 console, click on the bucket...