Often, on a membership site, you will to provide downloadable content. This could be a ZIP file, a PDF, an Excel WorkBook or a Word Document. You will not want these download links to be publicly available or shareable by members to non-members.
Upload Content To Amazon S3
Upload your content to Amazon S3 and ensure there is no public access. Set up authorized users with Read/Download access.
Set Up Link On Membership Site
imember360 provide a shortcode i4w_s3link. Use to create a link that expires in a specified number of seconds. Typically you will set this to something between 60 and 300 seconds. This give the member a minute or so after opening the page to click the link and download the content.