On a lot of the SE sites (notable exception being Stack Overflow itself), there's a link to Stack Overflow Business in the footer. It links to
https://stackoverflowbusiness.com. However, that site produces a 404 error. The site is down..
A couple of examples of where this magic link is located:
Either the link is obsolete (should it perhaps point towards Stack Overflow Enterprise?), or the site has broken down.