The embed card is a popular widget, used a lot around the site.
If you decide to use a green or red button or add the link in the Text in any other way, and don't want the default link to show underneath, you will have to set an external link in the URL field anyway. Otherwise the image won't show! The image will link to the external link you set in the URL field, so make sure it is the page you want it to link to. Just leave the Description field empty.
The disadvantage here is that if the page you're linking to gets moved, the link will break, as it's set as an external link.
Quirk #2 - always choose "Embed Card Extended" when adding the widget, otherwise your text won't show.
A single Embed card is shown below. On a Landing page it will only fit in one of the 3 column placeholders. If you need more than 3 Embed cards on your landing page, consider instead the Contact Person Collections Widget.