Hosting a website using S3 bucket is very easy all you need to have are the following things
AWS account.
S3 Bucket with static website hosting enabled.
Your website html file.
I will guide you step by step.
1. Create a S3 bucket and go to properties tab.
2. Enable Static website Hosting.
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3. Create a webpage or get your static website's content ready.
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4. Upload the file to S3 bucket.
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5. Make your webpage public as it is currently hidden and is private.
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6. Click on properties of your file and check for the generated link.
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7. Copy the link and open it using your browser.
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And its done. I hope it was useful.