About all I can tell you is that Amazon AWS (Amazon Web Services) is used to host a lot of other companies' web site content, completely separately from the famous retail website. I don't think there's any way to tell from that server host name what content it is/was.

Also, your Firefox identified itself to the forum as version 49. An update is available: this article describes how to get Firefox 54 using the "About Firefox" dialog on the help menu: Update Firefox to the latest release.

If something is holding you back from upgrading to Firefox 54, please let us know so we can suggest solutions or workarounds. Version 49 is not secure; Mozilla discloses security flaws after each new release.

Sometimes Firefox reports the wrong version because that information was saved in a preferences file. If the "About Firefox" dialog (see first article link) shows Firefox 54.0, you may need to clear out that incorrect information. See: How to reset the default user agent on Firefox.