Prepare source data and configuration

Objective

This step prepares the sample document and verifies the configuration required for browser-to-S3 upload. Because the file is uploaded directly from the browser, the bucket configuration, CORS rules, and environment variables must align correctly.

Execution Steps

Before starting the direct browser-to-S3 upload flow, ensure the storage configurations are set correctly:

Step 1: Verify the CORS configuration on the upload S3 bucket to allow PUT or POST requests directly from the browser.

Step 2: Configure Public access for the frontend bucket, ensuring public access is not entirely blocked so static files can be served.

Step 3: Enable Static website hosting on the frontend bucket and point the index document to index.html.