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by sha90 4613 days ago
If your application is only using S3 to upload objects, the full SDK would probably be overkill. Using pre-signed forms is sufficient there. However, if you want to use other services like DynamoDB, SQS, or SNS, pre-signed URLs will not work. Also note that in order to generate a pre-signed URL you still need a backend service running to sign those URLs, something you can avoid with the client-side SDK.