1. A main Wordpress site where we do the search: www.site.com
This site will contain our subscription services, our offer, articles, blog posts written by us. Mostly tutorials how to use our platform.
2. A bunch of Wordpress subsites as part of our Wordpress Multisite install: www.site.com/subsite1, www.site.com/subsite2, .... www.site.com/subsiteN
Each subsite will have it's own products and services listed as e-commerce items. They can also have articles, news, blog posts published.
3. A bunch of external sites like www.external1.com, www.external2.com, .... www.external3.com
These urls will be added on our own user interface by the external site owners. They will be mostly again products, services listed as e-commerce items, where possible.
We would like to have a weighting mechanism here. Susbistes (2.) will have higher importance than external sites (3.).
We will have global categories here. For example category1
will be shared by by multiple subsites(2.) and external sites(3.)
We want the faceted search to be aware of these global categories.