When sharing an image-only post (post that does not contain a link/URL, only a photo) to a personal Facebook page from your computer, an Amazon AWS link appears below the image. The shared post looks like this:
This occurs because of Facebook's internal processes which only allow URLs to be shared to personal pages from web. Due to this restriction, when sharing an image-only post, Facebook will pull the URL of the image. Clicking on the link under the image will take you to a page that includes only the image.
How Can You Work Around This?
If you would like to share images to Facebook without this link appearing, there is a work around! If you share from your phone rather than your computer, or share to a Facebook business page rather than a personal page, the image will appear without the link. Either sharing from your phone or sharing to a business page will result in your post looking like this: