jmarreros

This Plugin allows to use an external image as Featured Image, this can be especially useful if you house your images in another location.
This Plugin is compatible with Nelio External Featured Image Metadata, so you can reuse your data in case you want to uninstall Nelio Plugin.

External URL Featured Image

It is what I was looking for: simplicity.

$external_image = get_post_meta( $post->ID, '_dcms_eufi_img', true );

Works well for me

Use an external url image as Featured Image for your posts, pages, and other kind of post types.

datafeedr

The Cloak Affiliate Links for WooCommerce plugin allows you to mask all external links in your WooCommerce store.
For example, change this… 
 merchant.com/index.php?aff_id=123&product_id=456
… into this: 
 yoursite.com/go/123
Configure the status code for the redirect to either 301, 302 or 307.
The plugin also adds a “Disallow” to your robots.txt file to prevent bots from following those external links.

Cloak Affiliate Links for WooCommerce

I use it for some time now and I am very happy with it! Thanks!

Awesome plugin!

Cloak your WooCommerce external & affiliate links.

External URL Featured Image vs Cloak Affiliate Links for WooCommerce